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Finding the Fourth Proportional to 71,629,744.80, 107,216,002.80 and 56,513,200.80

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Solution

The fourth proportional to 71,629,744.80, 107,216,002.80 and 56,513,200.80 is: 84,589,432.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,629,744.80 : 107,216,002.80 = 56,513,200.80 : x
  2. Step 2: Convert to fraction form
    71,629,744.80/107,216,002.80 = 56,513,200.80/x
  3. Step 3: Cross multiply
    71,629,744.80x = 107,216,002.80 × 56,513,200.80
  4. Step 4: Simplify right side
    71,629,744.80x = 6,059,119,495,209,762
  5. Step 5: Solve for x
    x = 6,059,119,495,209,762/71,629,744.80
  6. Step 6: Final answer
    x = 84,589,432.95

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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.