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Finding the Fourth Proportional to 42,382.80, 63,622.80 and 25,761.60

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Solution

The fourth proportional to 42,382.80, 63,622.80 and 25,761.60 is: 38,671.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,382.80 : 63,622.80 = 25,761.60 : x
  2. Step 2: Convert to fraction form
    42,382.80/63,622.80 = 25,761.60/x
  3. Step 3: Cross multiply
    42,382.80x = 63,622.80 × 25,761.60
  4. Step 4: Simplify right side
    42,382.80x = 1,639,025,124.48
  5. Step 5: Solve for x
    x = 1,639,025,124.48/42,382.80
  6. Step 6: Final answer
    x = 38,671.94

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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.