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Finding the Fourth Proportional to 42,346.80, 63,531.80 and 34,429.62

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Solution

The fourth proportional to 42,346.80, 63,531.80 and 34,429.62 is: 51,653.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,346.80 : 63,531.80 = 34,429.62 : x
  2. Step 2: Convert to fraction form
    42,346.80/63,531.80 = 34,429.62/x
  3. Step 3: Cross multiply
    42,346.80x = 63,531.80 × 34,429.62
  4. Step 4: Simplify right side
    42,346.80x = 2,187,375,731.92
  5. Step 5: Solve for x
    x = 2,187,375,731.92/42,346.80
  6. Step 6: Final answer
    x = 51,653.86

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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.