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Finding the Fourth Proportional to 42,438, 58,569.84 and 25,671.12

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Solution

The fourth proportional to 42,438, 58,569.84 and 25,671.12 is: 35,429.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,438 : 58,569.84 = 25,671.12 : x
  2. Step 2: Convert to fraction form
    42,438/58,569.84 = 25,671.12/x
  3. Step 3: Cross multiply
    42,438x = 58,569.84 × 25,671.12
  4. Step 4: Simplify right side
    42,438x = 1,503,553,391.02
  5. Step 5: Solve for x
    x = 1,503,553,391.02/42,438
  6. Step 6: Final answer
    x = 35,429.41

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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.