Home / 90,561.60-135,754.92-31,352.76

Finding the Fourth Proportional to 90,561.60, 135,754.92 and 31,352.76

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Solution

The fourth proportional to 90,561.60, 135,754.92 and 31,352.76 is: 46,998.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,561.60 : 135,754.92 = 31,352.76 : x
  2. Step 2: Convert to fraction form
    90,561.60/135,754.92 = 31,352.76/x
  3. Step 3: Cross multiply
    90,561.60x = 135,754.92 × 31,352.76
  4. Step 4: Simplify right side
    90,561.60x = 4,256,291,425.58
  5. Step 5: Solve for x
    x = 4,256,291,425.58/90,561.60
  6. Step 6: Final answer
    x = 46,998.85

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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.