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Finding the Fourth Proportional to 99,605.89, 137,452.11 and 54,282.91

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Solution

The fourth proportional to 99,605.89, 137,452.11 and 54,282.91 is: 74,908.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,605.89 : 137,452.11 = 54,282.91 : x
  2. Step 2: Convert to fraction form
    99,605.89/137,452.11 = 54,282.91/x
  3. Step 3: Cross multiply
    99,605.89x = 137,452.11 × 54,282.91
  4. Step 4: Simplify right side
    99,605.89x = 7,461,300,516.44
  5. Step 5: Solve for x
    x = 7,461,300,516.44/99,605.89
  6. Step 6: Final answer
    x = 74,908.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.