Home / 83,927.70-125,891.55-76,929.30

Finding the Fourth Proportional to 83,927.70, 125,891.55 and 76,929.30

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Solution

The fourth proportional to 83,927.70, 125,891.55 and 76,929.30 is: 115,393.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,927.70 : 125,891.55 = 76,929.30 : x
  2. Step 2: Convert to fraction form
    83,927.70/125,891.55 = 76,929.30/x
  3. Step 3: Cross multiply
    83,927.70x = 125,891.55 × 76,929.30
  4. Step 4: Simplify right side
    83,927.70x = 9,684,748,817.42
  5. Step 5: Solve for x
    x = 9,684,748,817.42/83,927.70
  6. Step 6: Final answer
    x = 115,393.95

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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.