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Finding the Fourth Proportional to 91,151.84, 136,720.56 and 28,822.88

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Solution

The fourth proportional to 91,151.84, 136,720.56 and 28,822.88 is: 43,232.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,151.84 : 136,720.56 = 28,822.88 : x
  2. Step 2: Convert to fraction form
    91,151.84/136,720.56 = 28,822.88/x
  3. Step 3: Cross multiply
    91,151.84x = 136,720.56 × 28,822.88
  4. Step 4: Simplify right side
    91,151.84x = 3,940,680,294.41
  5. Step 5: Solve for x
    x = 3,940,680,294.41/91,151.84
  6. Step 6: Final answer
    x = 43,232.04

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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.