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Finding the Fourth Proportional to 91,247.49, 125,742.11 and 69,761.52

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Solution

The fourth proportional to 91,247.49, 125,742.11 and 69,761.52 is: 96,133.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,247.49 : 125,742.11 = 69,761.52 : x
  2. Step 2: Convert to fraction form
    91,247.49/125,742.11 = 69,761.52/x
  3. Step 3: Cross multiply
    91,247.49x = 125,742.11 × 69,761.52
  4. Step 4: Simplify right side
    91,247.49x = 8,771,960,372.80
  5. Step 5: Solve for x
    x = 8,771,960,372.80/91,247.49
  6. Step 6: Final answer
    x = 96,133.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.