Home / 90,061.11-135,091.48-84,580.62

Finding the Fourth Proportional to 90,061.11, 135,091.48 and 84,580.62

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Solution

The fourth proportional to 90,061.11, 135,091.48 and 84,580.62 is: 126,870.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,061.11 : 135,091.48 = 84,580.62 : x
  2. Step 2: Convert to fraction form
    90,061.11/135,091.48 = 84,580.62/x
  3. Step 3: Cross multiply
    90,061.11x = 135,091.48 × 84,580.62
  4. Step 4: Simplify right side
    90,061.11x = 11,426,121,472.85
  5. Step 5: Solve for x
    x = 11,426,121,472.85/90,061.11
  6. Step 6: Final answer
    x = 126,870.76

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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.