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Finding the Fourth Proportional to 72,484.92, 108,758.69 and 39,228.47

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Solution

The fourth proportional to 72,484.92, 108,758.69 and 39,228.47 is: 58,859.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,484.92 : 108,758.69 = 39,228.47 : x
  2. Step 2: Convert to fraction form
    72,484.92/108,758.69 = 39,228.47/x
  3. Step 3: Cross multiply
    72,484.92x = 108,758.69 × 39,228.47
  4. Step 4: Simplify right side
    72,484.92x = 4,266,436,267.97
  5. Step 5: Solve for x
    x = 4,266,436,267.97/72,484.92
  6. Step 6: Final answer
    x = 58,859.64

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1.5x scale

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.