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Finding the Fourth Proportional to 42,387.72, 58,476.78 and 25,611

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Solution

The fourth proportional to 42,387.72, 58,476.78 and 25,611 is: 35,332.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,387.72 : 58,476.78 = 25,611 : x
  2. Step 2: Convert to fraction form
    42,387.72/58,476.78 = 25,611/x
  3. Step 3: Cross multiply
    42,387.72x = 58,476.78 × 25,611
  4. Step 4: Simplify right side
    42,387.72x = 1,497,648,812.58
  5. Step 5: Solve for x
    x = 1,497,648,812.58/42,387.72
  6. Step 6: Final answer
    x = 35,332.14

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.