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Finding the Fourth Proportional to 73,171.60, 109,658.92 and 39,841.72

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Solution

The fourth proportional to 73,171.60, 109,658.92 and 39,841.72 is: 59,708.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,171.60 : 109,658.92 = 39,841.72 : x
  2. Step 2: Convert to fraction form
    73,171.60/109,658.92 = 39,841.72/x
  3. Step 3: Cross multiply
    73,171.60x = 109,658.92 × 39,841.72
  4. Step 4: Simplify right side
    73,171.60x = 4,368,999,986.14
  5. Step 5: Solve for x
    x = 4,368,999,986.14/73,171.60
  6. Step 6: Final answer
    x = 59,708.96

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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.