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Finding the Fourth Proportional to 90,561.66, 135,789.78 and 60,610.08

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Solution

The fourth proportional to 90,561.66, 135,789.78 and 60,610.08 is: 90,879.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,561.66 : 135,789.78 = 60,610.08 : x
  2. Step 2: Convert to fraction form
    90,561.66/135,789.78 = 60,610.08/x
  3. Step 3: Cross multiply
    90,561.66x = 135,789.78 × 60,610.08
  4. Step 4: Simplify right side
    90,561.66x = 8,230,229,428.98
  5. Step 5: Solve for x
    x = 8,230,229,428.98/90,561.66
  6. Step 6: Final answer
    x = 90,879.84

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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.