Home / 90,988,672.70-136,483,009.05-56,551,295.90

Finding the Fourth Proportional to 90,988,672.70, 136,483,009.05 and 56,551,295.90

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Solution

The fourth proportional to 90,988,672.70, 136,483,009.05 and 56,551,295.90 is: 84,826,943.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,988,672.70 : 136,483,009.05 = 56,551,295.90 : x
  2. Step 2: Convert to fraction form
    90,988,672.70/136,483,009.05 = 56,551,295.90/x
  3. Step 3: Cross multiply
    90,988,672.70x = 136,483,009.05 × 56,551,295.90
  4. Step 4: Simplify right side
    90,988,672.70x = 7,718,291,030,108,928
  5. Step 5: Solve for x
    x = 7,718,291,030,108,928/90,988,672.70
  6. Step 6: Final answer
    x = 84,826,943.85

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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.