Home / 81,989.26-122,971.65-22,818.76

Finding the Fourth Proportional to 81,989.26, 122,971.65 and 22,818.76

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Solution

The fourth proportional to 81,989.26, 122,971.65 and 22,818.76 is: 34,224.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,989.26 : 122,971.65 = 22,818.76 : x
  2. Step 2: Convert to fraction form
    81,989.26/122,971.65 = 22,818.76/x
  3. Step 3: Cross multiply
    81,989.26x = 122,971.65 × 22,818.76
  4. Step 4: Simplify right side
    81,989.26x = 2,806,060,568.15
  5. Step 5: Solve for x
    x = 2,806,060,568.15/81,989.26
  6. Step 6: Final answer
    x = 34,224.73

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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.