Home / 90,561.18-135,665.05-59,301.66

Finding the Fourth Proportional to 90,561.18, 135,665.05 and 59,301.66

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Solution

The fourth proportional to 90,561.18, 135,665.05 and 59,301.66 is: 88,836.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,561.18 : 135,665.05 = 59,301.66 : x
  2. Step 2: Convert to fraction form
    90,561.18/135,665.05 = 59,301.66/x
  3. Step 3: Cross multiply
    90,561.18x = 135,665.05 × 59,301.66
  4. Step 4: Simplify right side
    90,561.18x = 8,045,162,011.98
  5. Step 5: Solve for x
    x = 8,045,162,011.98/90,561.18
  6. Step 6: Final answer
    x = 88,836.77

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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.