Home / 81,985.50-122,976.09-22,818.78

Finding the Fourth Proportional to 81,985.50, 122,976.09 and 22,818.78

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Solution

The fourth proportional to 81,985.50, 122,976.09 and 22,818.78 is: 34,227.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,985.50 : 122,976.09 = 22,818.78 : x
  2. Step 2: Convert to fraction form
    81,985.50/122,976.09 = 22,818.78/x
  3. Step 3: Cross multiply
    81,985.50x = 122,976.09 × 22,818.78
  4. Step 4: Simplify right side
    81,985.50x = 2,806,164,342.97
  5. Step 5: Solve for x
    x = 2,806,164,342.97/81,985.50
  6. Step 6: Final answer
    x = 34,227.57

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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.