Home / 81,532.05-122,306.45-28,223.96

Finding the Fourth Proportional to 81,532.05, 122,306.45 and 28,223.96

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Solution

The fourth proportional to 81,532.05, 122,306.45 and 28,223.96 is: 42,338.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,532.05 : 122,306.45 = 28,223.96 : x
  2. Step 2: Convert to fraction form
    81,532.05/122,306.45 = 28,223.96/x
  3. Step 3: Cross multiply
    81,532.05x = 122,306.45 × 28,223.96
  4. Step 4: Simplify right side
    81,532.05x = 3,451,971,599.89
  5. Step 5: Solve for x
    x = 3,451,971,599.89/81,532.05
  6. Step 6: Final answer
    x = 42,338.83

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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.