Home / 83,121,421.20-124,684,270.20-39,391,918.80

Finding the Fourth Proportional to 83,121,421.20, 124,684,270.20 and 39,391,918.80

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Solution

The fourth proportional to 83,121,421.20, 124,684,270.20 and 39,391,918.80 is: 59,088,891.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,121,421.20 : 124,684,270.20 = 39,391,918.80 : x
  2. Step 2: Convert to fraction form
    83,121,421.20/124,684,270.20 = 39,391,918.80/x
  3. Step 3: Cross multiply
    83,121,421.20x = 124,684,270.20 × 39,391,918.80
  4. Step 4: Simplify right side
    83,121,421.20x = 4,911,552,647,355,660
  5. Step 5: Solve for x
    x = 4,911,552,647,355,660/83,121,421.20
  6. Step 6: Final answer
    x = 59,088,891.61

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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.