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Finding the Fourth Proportional to 71,499.73, 107,271.12 and 64,446.65

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Solution

The fourth proportional to 71,499.73, 107,271.12 and 64,446.65 is: 96,689.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,499.73 : 107,271.12 = 64,446.65 : x
  2. Step 2: Convert to fraction form
    71,499.73/107,271.12 = 64,446.65/x
  3. Step 3: Cross multiply
    71,499.73x = 107,271.12 × 64,446.65
  4. Step 4: Simplify right side
    71,499.73x = 6,913,264,593.93
  5. Step 5: Solve for x
    x = 6,913,264,593.93/71,499.73
  6. Step 6: Final answer
    x = 96,689.38

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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.