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Finding the Fourth Proportional to 71,896.68, 99,218.12 and 39,632.49

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Solution

The fourth proportional to 71,896.68, 99,218.12 and 39,632.49 is: 54,693.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,896.68 : 99,218.12 = 39,632.49 : x
  2. Step 2: Convert to fraction form
    71,896.68/99,218.12 = 39,632.49/x
  3. Step 3: Cross multiply
    71,896.68x = 99,218.12 × 39,632.49
  4. Step 4: Simplify right side
    71,896.68x = 3,932,260,950.56
  5. Step 5: Solve for x
    x = 3,932,260,950.56/71,896.68
  6. Step 6: Final answer
    x = 54,693.22

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1.5x scale

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.