Home / 87,785.46-121,143.60-47,499.30

Finding the Fourth Proportional to 87,785.46, 121,143.60 and 47,499.30

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Solution

The fourth proportional to 87,785.46, 121,143.60 and 47,499.30 is: 65,548.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,785.46 : 121,143.60 = 47,499.30 : x
  2. Step 2: Convert to fraction form
    87,785.46/121,143.60 = 47,499.30/x
  3. Step 3: Cross multiply
    87,785.46x = 121,143.60 × 47,499.30
  4. Step 4: Simplify right side
    87,785.46x = 5,754,236,199.48
  5. Step 5: Solve for x
    x = 5,754,236,199.48/87,785.46
  6. Step 6: Final answer
    x = 65,548.85

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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.