Home / 98,057.09-135,332.60-57,234.61

Finding the Fourth Proportional to 98,057.09, 135,332.60 and 57,234.61

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Solution

The fourth proportional to 98,057.09, 135,332.60 and 57,234.61 is: 78,991.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,057.09 : 135,332.60 = 57,234.61 : x
  2. Step 2: Convert to fraction form
    98,057.09/135,332.60 = 57,234.61/x
  3. Step 3: Cross multiply
    98,057.09x = 135,332.60 × 57,234.61
  4. Step 4: Simplify right side
    98,057.09x = 7,745,708,581.29
  5. Step 5: Solve for x
    x = 7,745,708,581.29/98,057.09
  6. Step 6: Final answer
    x = 78,991.83

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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.