Home / 81,841.04-122,673.36-39,631.76

Finding the Fourth Proportional to 81,841.04, 122,673.36 and 39,631.76

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Solution

The fourth proportional to 81,841.04, 122,673.36 and 39,631.76 is: 59,404.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,841.04 : 122,673.36 = 39,631.76 : x
  2. Step 2: Convert to fraction form
    81,841.04/122,673.36 = 39,631.76/x
  3. Step 3: Cross multiply
    81,841.04x = 122,673.36 × 39,631.76
  4. Step 4: Simplify right side
    81,841.04x = 4,861,761,161.91
  5. Step 5: Solve for x
    x = 4,861,761,161.91/81,841.04
  6. Step 6: Final answer
    x = 59,404.93

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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.