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Finding the Fourth Proportional to 71,561.96, 107,386.62 and 45,230.44

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Solution

The fourth proportional to 71,561.96, 107,386.62 and 45,230.44 is: 67,873.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,561.96 : 107,386.62 = 45,230.44 : x
  2. Step 2: Convert to fraction form
    71,561.96/107,386.62 = 45,230.44/x
  3. Step 3: Cross multiply
    71,561.96x = 107,386.62 × 45,230.44
  4. Step 4: Simplify right side
    71,561.96x = 4,857,144,072.71
  5. Step 5: Solve for x
    x = 4,857,144,072.71/71,561.96
  6. Step 6: Final answer
    x = 67,873.27

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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.