Home / 71,531.24-98,711.88-39,701.48

Finding the Fourth Proportional to 71,531.24, 98,711.88 and 39,701.48

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Solution

The fourth proportional to 71,531.24, 98,711.88 and 39,701.48 is: 54,787.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,531.24 : 98,711.88 = 39,701.48 : x
  2. Step 2: Convert to fraction form
    71,531.24/98,711.88 = 39,701.48/x
  3. Step 3: Cross multiply
    71,531.24x = 98,711.88 × 39,701.48
  4. Step 4: Simplify right side
    71,531.24x = 3,919,007,729.58
  5. Step 5: Solve for x
    x = 3,919,007,729.58/71,531.24
  6. Step 6: Final answer
    x = 54,787.36

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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.