Home / 66,420,689.20-99,673,024.20-39,126,929.20

Finding the Fourth Proportional to 66,420,689.20, 99,673,024.20 and 39,126,929.20

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Solution

The fourth proportional to 66,420,689.20, 99,673,024.20 and 39,126,929.20 is: 58,715,129.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,420,689.20 : 99,673,024.20 = 39,126,929.20 : x
  2. Step 2: Convert to fraction form
    66,420,689.20/99,673,024.20 = 39,126,929.20/x
  3. Step 3: Cross multiply
    66,420,689.20x = 99,673,024.20 × 39,126,929.20
  4. Step 4: Simplify right side
    66,420,689.20x = 3,899,899,361,023,287
  5. Step 5: Solve for x
    x = 3,899,899,361,023,287/66,420,689.20
  6. Step 6: Final answer
    x = 58,715,129.40

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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.