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Finding the Fourth Proportional to 67,221.16, 92,754.92 and 38,921.38

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Solution

The fourth proportional to 67,221.16, 92,754.92 and 38,921.38 is: 53,705.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,221.16 : 92,754.92 = 38,921.38 : x
  2. Step 2: Convert to fraction form
    67,221.16/92,754.92 = 38,921.38/x
  3. Step 3: Cross multiply
    67,221.16x = 92,754.92 × 38,921.38
  4. Step 4: Simplify right side
    67,221.16x = 3,610,149,488.19
  5. Step 5: Solve for x
    x = 3,610,149,488.19/67,221.16
  6. Step 6: Final answer
    x = 53,705.55

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.