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Finding the Fourth Proportional to 45,472, 62,761.60 and 29,574.40

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Solution

The fourth proportional to 45,472, 62,761.60 and 29,574.40 is: 40,819.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,472 : 62,761.60 = 29,574.40 : x
  2. Step 2: Convert to fraction form
    45,472/62,761.60 = 29,574.40/x
  3. Step 3: Cross multiply
    45,472x = 62,761.60 × 29,574.40
  4. Step 4: Simplify right side
    45,472x = 1,856,136,663.04
  5. Step 5: Solve for x
    x = 1,856,136,663.04/45,472
  6. Step 6: Final answer
    x = 40,819.33

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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.