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Finding the Fourth Proportional to 72,071.66, 108,107.49 and 52,474.92

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Solution

The fourth proportional to 72,071.66, 108,107.49 and 52,474.92 is: 78,712.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,071.66 : 108,107.49 = 52,474.92 : x
  2. Step 2: Convert to fraction form
    72,071.66/108,107.49 = 52,474.92/x
  3. Step 3: Cross multiply
    72,071.66x = 108,107.49 × 52,474.92
  4. Step 4: Simplify right side
    72,071.66x = 5,672,931,626.78
  5. Step 5: Solve for x
    x = 5,672,931,626.78/72,071.66
  6. Step 6: Final answer
    x = 78,712.38

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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.