Home / 87,760.64-121,110.28-53,769.20

Finding the Fourth Proportional to 87,760.64, 121,110.28 and 53,769.20

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Solution

The fourth proportional to 87,760.64, 121,110.28 and 53,769.20 is: 74,201.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,760.64 : 121,110.28 = 53,769.20 : x
  2. Step 2: Convert to fraction form
    87,760.64/121,110.28 = 53,769.20/x
  3. Step 3: Cross multiply
    87,760.64x = 121,110.28 × 53,769.20
  4. Step 4: Simplify right side
    87,760.64x = 6,512,002,127.40
  5. Step 5: Solve for x
    x = 6,512,002,127.40/87,760.64
  6. Step 6: Final answer
    x = 74,201.85

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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.