Home / 83,020.80-124,394.40-47,899.20

Finding the Fourth Proportional to 83,020.80, 124,394.40 and 47,899.20

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Solution

The fourth proportional to 83,020.80, 124,394.40 and 47,899.20 is: 71,769.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,020.80 : 124,394.40 = 47,899.20 : x
  2. Step 2: Convert to fraction form
    83,020.80/124,394.40 = 47,899.20/x
  3. Step 3: Cross multiply
    83,020.80x = 124,394.40 × 47,899.20
  4. Step 4: Simplify right side
    83,020.80x = 5,958,392,244.48
  5. Step 5: Solve for x
    x = 5,958,392,244.48/83,020.80
  6. Step 6: Final answer
    x = 71,769.87

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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.