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Finding the Fourth Proportional to 72,762.08, 109,142.76 and 62,871.08

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Solution

The fourth proportional to 72,762.08, 109,142.76 and 62,871.08 is: 94,306.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,762.08 : 109,142.76 = 62,871.08 : x
  2. Step 2: Convert to fraction form
    72,762.08/109,142.76 = 62,871.08/x
  3. Step 3: Cross multiply
    72,762.08x = 109,142.76 × 62,871.08
  4. Step 4: Simplify right side
    72,762.08x = 6,861,923,195.38
  5. Step 5: Solve for x
    x = 6,861,923,195.38/72,762.08
  6. Step 6: Final answer
    x = 94,306.31

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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.