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Finding the Fourth Proportional to 81,889.76, 122,834.65 and 22,725.45

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Solution

The fourth proportional to 81,889.76, 122,834.65 and 22,725.45 is: 34,088.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,889.76 : 122,834.65 = 22,725.45 : x
  2. Step 2: Convert to fraction form
    81,889.76/122,834.65 = 22,725.45/x
  3. Step 3: Cross multiply
    81,889.76x = 122,834.65 × 22,725.45
  4. Step 4: Simplify right side
    81,889.76x = 2,791,472,696.84
  5. Step 5: Solve for x
    x = 2,791,472,696.84/81,889.76
  6. Step 6: Final answer
    x = 34,088.18

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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.