Home / 81,989.28-122,981.76-22,829.04

Finding the Fourth Proportional to 81,989.28, 122,981.76 and 22,829.04

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Solution

The fourth proportional to 81,989.28, 122,981.76 and 22,829.04 is: 34,242.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,989.28 : 122,981.76 = 22,829.04 : x
  2. Step 2: Convert to fraction form
    81,989.28/122,981.76 = 22,829.04/x
  3. Step 3: Cross multiply
    81,989.28x = 122,981.76 × 22,829.04
  4. Step 4: Simplify right side
    81,989.28x = 2,807,555,518.31
  5. Step 5: Solve for x
    x = 2,807,555,518.31/81,989.28
  6. Step 6: Final answer
    x = 34,242.96

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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.