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Finding the Fourth Proportional to 78,393.38, 108,227.75 and 51,613.73

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Solution

The fourth proportional to 78,393.38, 108,227.75 and 51,613.73 is: 71,256.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,393.38 : 108,227.75 = 51,613.73 : x
  2. Step 2: Convert to fraction form
    78,393.38/108,227.75 = 51,613.73/x
  3. Step 3: Cross multiply
    78,393.38x = 108,227.75 × 51,613.73
  4. Step 4: Simplify right side
    78,393.38x = 5,586,038,082.44
  5. Step 5: Solve for x
    x = 5,586,038,082.44/78,393.38
  6. Step 6: Final answer
    x = 71,256.50

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1.5x scale

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.