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Finding the Fourth Proportional to 71,140.93, 98,253.72 and 55,200.97

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Solution

The fourth proportional to 71,140.93, 98,253.72 and 55,200.97 is: 76,238.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,140.93 : 98,253.72 = 55,200.97 : x
  2. Step 2: Convert to fraction form
    71,140.93/98,253.72 = 55,200.97/x
  3. Step 3: Cross multiply
    71,140.93x = 98,253.72 × 55,200.97
  4. Step 4: Simplify right side
    71,140.93x = 5,423,700,650.11
  5. Step 5: Solve for x
    x = 5,423,700,650.11/71,140.93
  6. Step 6: Final answer
    x = 76,238.82

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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.