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Finding the Fourth Proportional to 145,220.97, 217,844.90 and 56,481.21

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Solution

The fourth proportional to 145,220.97, 217,844.90 and 56,481.21 is: 84,727.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,220.97 : 217,844.90 = 56,481.21 : x
  2. Step 2: Convert to fraction form
    145,220.97/217,844.90 = 56,481.21/x
  3. Step 3: Cross multiply
    145,220.97x = 217,844.90 × 56,481.21
  4. Step 4: Simplify right side
    145,220.97x = 12,304,143,261.92
  5. Step 5: Solve for x
    x = 12,304,143,261.92/145,220.97
  6. Step 6: Final answer
    x = 84,727.04

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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.