Home / 28,106,961,247.78-42,158,890,001.68-20,551,488,480.20

Finding the Fourth Proportional to 28,106,961,247.78, 42,158,890,001.68 and 20,551,488,480.20

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Solution

The fourth proportional to 28,106,961,247.78, 42,158,890,001.68 and 20,551,488,480.20 is: 30,826,098,010.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106,961,247.78 : 42,158,890,001.68 = 20,551,488,480.20 : x
  2. Step 2: Convert to fraction form
    28,106,961,247.78/42,158,890,001.68 = 20,551,488,480.20/x
  3. Step 3: Cross multiply
    28,106,961,247.78x = 42,158,890,001.68 × 20,551,488,480.20
  4. Step 4: Simplify right side
    28,106,961,247.78x = 866,427,942,207,568,216,064
  5. Step 5: Solve for x
    x = 866,427,942,207,568,216,064/28,106,961,247.78
  6. Step 6: Final answer
    x = 30,826,098,010.72

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.