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Finding the Fourth Proportional to 92,768.43, 127,941.40 and 71,310.12

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Solution

The fourth proportional to 92,768.43, 127,941.40 and 71,310.12 is: 98,347.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,768.43 : 127,941.40 = 71,310.12 : x
  2. Step 2: Convert to fraction form
    92,768.43/127,941.40 = 71,310.12/x
  3. Step 3: Cross multiply
    92,768.43x = 127,941.40 × 71,310.12
  4. Step 4: Simplify right side
    92,768.43x = 9,123,516,196.33
  5. Step 5: Solve for x
    x = 9,123,516,196.33/92,768.43
  6. Step 6: Final answer
    x = 98,347.21

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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.