Home / 78,732,139.40-118,098,209.10-27,607,515.20

Finding the Fourth Proportional to 78,732,139.40, 118,098,209.10 and 27,607,515.20

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Solution

The fourth proportional to 78,732,139.40, 118,098,209.10 and 27,607,515.20 is: 41,411,272.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,139.40 : 118,098,209.10 = 27,607,515.20 : x
  2. Step 2: Convert to fraction form
    78,732,139.40/118,098,209.10 = 27,607,515.20/x
  3. Step 3: Cross multiply
    78,732,139.40x = 118,098,209.10 × 27,607,515.20
  4. Step 4: Simplify right side
    78,732,139.40x = 3,260,398,102,821,028
  5. Step 5: Solve for x
    x = 3,260,398,102,821,028/78,732,139.40
  6. Step 6: Final answer
    x = 41,411,272.80

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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.