Home / 83,561.76-115,342.79-74,704.41

Finding the Fourth Proportional to 83,561.76, 115,342.79 and 74,704.41

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Solution

The fourth proportional to 83,561.76, 115,342.79 and 74,704.41 is: 103,116.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,561.76 : 115,342.79 = 74,704.41 : x
  2. Step 2: Convert to fraction form
    83,561.76/115,342.79 = 74,704.41/x
  3. Step 3: Cross multiply
    83,561.76x = 115,342.79 × 74,704.41
  4. Step 4: Simplify right side
    83,561.76x = 8,616,614,701.18
  5. Step 5: Solve for x
    x = 8,616,614,701.18/83,561.76
  6. Step 6: Final answer
    x = 103,116.72

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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.