Home / 71,516,331.52-98,702,937.12-40,157,900.80

Finding the Fourth Proportional to 71,516,331.52, 98,702,937.12 and 40,157,900.80

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Solution

The fourth proportional to 71,516,331.52, 98,702,937.12 and 40,157,900.80 is: 55,423,742.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,516,331.52 : 98,702,937.12 = 40,157,900.80 : x
  2. Step 2: Convert to fraction form
    71,516,331.52/98,702,937.12 = 40,157,900.80/x
  3. Step 3: Cross multiply
    71,516,331.52x = 98,702,937.12 × 40,157,900.80
  4. Step 4: Simplify right side
    71,516,331.52x = 3,963,702,757,533,597.50
  5. Step 5: Solve for x
    x = 3,963,702,757,533,597.50/71,516,331.52
  6. Step 6: Final answer
    x = 55,423,742.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.