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Finding the Fourth Proportional to 85,247.79, 127,874.12 and 26,082.15

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Solution

The fourth proportional to 85,247.79, 127,874.12 and 26,082.15 is: 39,123.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,247.79 : 127,874.12 = 26,082.15 : x
  2. Step 2: Convert to fraction form
    85,247.79/127,874.12 = 26,082.15/x
  3. Step 3: Cross multiply
    85,247.79x = 127,874.12 × 26,082.15
  4. Step 4: Simplify right side
    85,247.79x = 3,335,231,848.55
  5. Step 5: Solve for x
    x = 3,335,231,848.55/85,247.79
  6. Step 6: Final answer
    x = 39,123.97

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1.5x scale

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.