Home / 81,581.76-122,175.04-41,495.28

Finding the Fourth Proportional to 81,581.76, 122,175.04 and 41,495.28

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Solution

The fourth proportional to 81,581.76, 122,175.04 and 41,495.28 is: 62,142.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,581.76 : 122,175.04 = 41,495.28 : x
  2. Step 2: Convert to fraction form
    81,581.76/122,175.04 = 41,495.28/x
  3. Step 3: Cross multiply
    81,581.76x = 122,175.04 × 41,495.28
  4. Step 4: Simplify right side
    81,581.76x = 5,069,687,493.81
  5. Step 5: Solve for x
    x = 5,069,687,493.81/81,581.76
  6. Step 6: Final answer
    x = 62,142.41

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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.