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Finding the Fourth Proportional to 58,171.38, 87,142.86 and 38,389.56

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Solution

The fourth proportional to 58,171.38, 87,142.86 and 38,389.56 is: 57,508.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,171.38 : 87,142.86 = 38,389.56 : x
  2. Step 2: Convert to fraction form
    58,171.38/87,142.86 = 38,389.56/x
  3. Step 3: Cross multiply
    58,171.38x = 87,142.86 × 38,389.56
  4. Step 4: Simplify right side
    58,171.38x = 3,345,376,052.54
  5. Step 5: Solve for x
    x = 3,345,376,052.54/58,171.38
  6. Step 6: Final answer
    x = 57,508.97

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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.