Home / 83,731.65-125,704.10-54,272.76

Finding the Fourth Proportional to 83,731.65, 125,704.10 and 54,272.76

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Solution

The fourth proportional to 83,731.65, 125,704.10 and 54,272.76 is: 81,478.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,731.65 : 125,704.10 = 54,272.76 : x
  2. Step 2: Convert to fraction form
    83,731.65/125,704.10 = 54,272.76/x
  3. Step 3: Cross multiply
    83,731.65x = 125,704.10 × 54,272.76
  4. Step 4: Simplify right side
    83,731.65x = 6,822,308,450.32
  5. Step 5: Solve for x
    x = 6,822,308,450.32/83,731.65
  6. Step 6: Final answer
    x = 81,478.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.