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Finding the Fourth Proportional to 83,935.40, 125,903.10 and 79,010.60

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Solution

The fourth proportional to 83,935.40, 125,903.10 and 79,010.60 is: 118,515.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,935.40 : 125,903.10 = 79,010.60 : x
  2. Step 2: Convert to fraction form
    83,935.40/125,903.10 = 79,010.60/x
  3. Step 3: Cross multiply
    83,935.40x = 125,903.10 × 79,010.60
  4. Step 4: Simplify right side
    83,935.40x = 9,947,679,472.86
  5. Step 5: Solve for x
    x = 9,947,679,472.86/83,935.40
  6. Step 6: Final answer
    x = 118,515.90

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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.