Home / 81,988.26-122,970.15-22,817.76

Finding the Fourth Proportional to 81,988.26, 122,970.15 and 22,817.76

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Solution

The fourth proportional to 81,988.26, 122,970.15 and 22,817.76 is: 34,223.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,988.26 : 122,970.15 = 22,817.76 : x
  2. Step 2: Convert to fraction form
    81,988.26/122,970.15 = 22,817.76/x
  3. Step 3: Cross multiply
    81,988.26x = 122,970.15 × 22,817.76
  4. Step 4: Simplify right side
    81,988.26x = 2,805,903,369.86
  5. Step 5: Solve for x
    x = 2,805,903,369.86/81,988.26
  6. Step 6: Final answer
    x = 34,223.23

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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.