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Finding the Fourth Proportional to 66,876.62, 100,358.37 and 28,962.91

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Solution

The fourth proportional to 66,876.62, 100,358.37 and 28,962.91 is: 43,463.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,876.62 : 100,358.37 = 28,962.91 : x
  2. Step 2: Convert to fraction form
    66,876.62/100,358.37 = 28,962.91/x
  3. Step 3: Cross multiply
    66,876.62x = 100,358.37 × 28,962.91
  4. Step 4: Simplify right side
    66,876.62x = 2,906,670,187.16
  5. Step 5: Solve for x
    x = 2,906,670,187.16/66,876.62
  6. Step 6: Final answer
    x = 43,463.18

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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.