Home / 87,732.78-121,071.60-47,446.54

Finding the Fourth Proportional to 87,732.78, 121,071.60 and 47,446.54

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Solution

The fourth proportional to 87,732.78, 121,071.60 and 47,446.54 is: 65,476.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,732.78 : 121,071.60 = 47,446.54 : x
  2. Step 2: Convert to fraction form
    87,732.78/121,071.60 = 47,446.54/x
  3. Step 3: Cross multiply
    87,732.78x = 121,071.60 × 47,446.54
  4. Step 4: Simplify right side
    87,732.78x = 5,744,428,604.30
  5. Step 5: Solve for x
    x = 5,744,428,604.30/87,732.78
  6. Step 6: Final answer
    x = 65,476.42

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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.