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Finding the Fourth Proportional to 63,102.75, 87,082.88 and 40,785.63

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Solution

The fourth proportional to 63,102.75, 87,082.88 and 40,785.63 is: 56,284.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,102.75 : 87,082.88 = 40,785.63 : x
  2. Step 2: Convert to fraction form
    63,102.75/87,082.88 = 40,785.63/x
  3. Step 3: Cross multiply
    63,102.75x = 87,082.88 × 40,785.63
  4. Step 4: Simplify right side
    63,102.75x = 3,551,730,123.01
  5. Step 5: Solve for x
    x = 3,551,730,123.01/63,102.75
  6. Step 6: Final answer
    x = 56,284.87

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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.