Home / 79,538.16-109,765.05-45,557.61

Finding the Fourth Proportional to 79,538.16, 109,765.05 and 45,557.61

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Solution

The fourth proportional to 79,538.16, 109,765.05 and 45,557.61 is: 62,870.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,538.16 : 109,765.05 = 45,557.61 : x
  2. Step 2: Convert to fraction form
    79,538.16/109,765.05 = 45,557.61/x
  3. Step 3: Cross multiply
    79,538.16x = 109,765.05 × 45,557.61
  4. Step 4: Simplify right side
    79,538.16x = 5,000,633,339.53
  5. Step 5: Solve for x
    x = 5,000,633,339.53/79,538.16
  6. Step 6: Final answer
    x = 62,870.87

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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.