Home / 83,139.40-124,557.90-47,974.60

Finding the Fourth Proportional to 83,139.40, 124,557.90 and 47,974.60

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Solution

The fourth proportional to 83,139.40, 124,557.90 and 47,974.60 is: 71,874.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,139.40 : 124,557.90 = 47,974.60 : x
  2. Step 2: Convert to fraction form
    83,139.40/124,557.90 = 47,974.60/x
  3. Step 3: Cross multiply
    83,139.40x = 124,557.90 × 47,974.60
  4. Step 4: Simplify right side
    83,139.40x = 5,975,615,429.34
  5. Step 5: Solve for x
    x = 5,975,615,429.34/83,139.40
  6. Step 6: Final answer
    x = 71,874.65

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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.