Home / 83,724.70-125,587.05-77,819.80

Finding the Fourth Proportional to 83,724.70, 125,587.05 and 77,819.80

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Solution

The fourth proportional to 83,724.70, 125,587.05 and 77,819.80 is: 116,729.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,724.70 : 125,587.05 = 77,819.80 : x
  2. Step 2: Convert to fraction form
    83,724.70/125,587.05 = 77,819.80/x
  3. Step 3: Cross multiply
    83,724.70x = 125,587.05 × 77,819.80
  4. Step 4: Simplify right side
    83,724.70x = 9,773,159,113.59
  5. Step 5: Solve for x
    x = 9,773,159,113.59/83,724.70
  6. Step 6: Final answer
    x = 116,729.70

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1.5x scale

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.