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Finding the Fourth Proportional to 83,965.20, 125,947.80 and 73,030.20

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Solution

The fourth proportional to 83,965.20, 125,947.80 and 73,030.20 is: 109,545.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,965.20 : 125,947.80 = 73,030.20 : x
  2. Step 2: Convert to fraction form
    83,965.20/125,947.80 = 73,030.20/x
  3. Step 3: Cross multiply
    83,965.20x = 125,947.80 × 73,030.20
  4. Step 4: Simplify right side
    83,965.20x = 9,197,993,023.56
  5. Step 5: Solve for x
    x = 9,197,993,023.56/83,965.20
  6. Step 6: Final answer
    x = 109,545.30

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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.