Home / 87,781.28-121,140.26-50,059.04

Finding the Fourth Proportional to 87,781.28, 121,140.26 and 50,059.04

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Solution

The fourth proportional to 87,781.28, 121,140.26 and 50,059.04 is: 69,082.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,781.28 : 121,140.26 = 50,059.04 : x
  2. Step 2: Convert to fraction form
    87,781.28/121,140.26 = 50,059.04/x
  3. Step 3: Cross multiply
    87,781.28x = 121,140.26 × 50,059.04
  4. Step 4: Simplify right side
    87,781.28x = 6,064,165,120.95
  5. Step 5: Solve for x
    x = 6,064,165,120.95/87,781.28
  6. Step 6: Final answer
    x = 69,082.67

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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.