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Finding the Fourth Proportional to 83,123.40, 124,763.40 and 43,708.80

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Solution

The fourth proportional to 83,123.40, 124,763.40 and 43,708.80 is: 65,604.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,123.40 : 124,763.40 = 43,708.80 : x
  2. Step 2: Convert to fraction form
    83,123.40/124,763.40 = 43,708.80/x
  3. Step 3: Cross multiply
    83,123.40x = 124,763.40 × 43,708.80
  4. Step 4: Simplify right side
    83,123.40x = 5,453,258,497.92
  5. Step 5: Solve for x
    x = 5,453,258,497.92/83,123.40
  6. Step 6: Final answer
    x = 65,604.37

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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.