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Finding the Fourth Proportional to 42,660, 63,989.28 and 35,195.04

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Solution

The fourth proportional to 42,660, 63,989.28 and 35,195.04 is: 52,791.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,660 : 63,989.28 = 35,195.04 : x
  2. Step 2: Convert to fraction form
    42,660/63,989.28 = 35,195.04/x
  3. Step 3: Cross multiply
    42,660x = 63,989.28 × 35,195.04
  4. Step 4: Simplify right side
    42,660x = 2,252,105,269.17
  5. Step 5: Solve for x
    x = 2,252,105,269.17/42,660
  6. Step 6: Final answer
    x = 52,791.97

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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.