Home / 28,039,381.20-42,063,008.40-8,868,139.20

Finding the Fourth Proportional to 28,039,381.20, 42,063,008.40 and 8,868,139.20

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Solution

The fourth proportional to 28,039,381.20, 42,063,008.40 and 8,868,139.20 is: 13,303,453.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,039,381.20 : 42,063,008.40 = 8,868,139.20 : x
  2. Step 2: Convert to fraction form
    28,039,381.20/42,063,008.40 = 8,868,139.20/x
  3. Step 3: Cross multiply
    28,039,381.20x = 42,063,008.40 × 8,868,139.20
  4. Step 4: Simplify right side
    28,039,381.20x = 373,020,613,661,969.25
  5. Step 5: Solve for x
    x = 373,020,613,661,969.25/28,039,381.20
  6. Step 6: Final answer
    x = 13,303,453.85

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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.