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Finding the Fourth Proportional to 57,496.71, 79,381.92 and 39,377.82

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Solution

The fourth proportional to 57,496.71, 79,381.92 and 39,377.82 is: 54,366.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,496.71 : 79,381.92 = 39,377.82 : x
  2. Step 2: Convert to fraction form
    57,496.71/79,381.92 = 39,377.82/x
  3. Step 3: Cross multiply
    57,496.71x = 79,381.92 × 39,377.82
  4. Step 4: Simplify right side
    57,496.71x = 3,125,886,760.13
  5. Step 5: Solve for x
    x = 3,125,886,760.13/57,496.71
  6. Step 6: Final answer
    x = 54,366.36

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Why These Related Problems?

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