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Finding the Fourth Proportional to 69,687.45, 96,163.80 and 38,642.42

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Solution

The fourth proportional to 69,687.45, 96,163.80 and 38,642.42 is: 53,323.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,687.45 : 96,163.80 = 38,642.42 : x
  2. Step 2: Convert to fraction form
    69,687.45/96,163.80 = 38,642.42/x
  3. Step 3: Cross multiply
    69,687.45x = 96,163.80 × 38,642.42
  4. Step 4: Simplify right side
    69,687.45x = 3,716,001,467.58
  5. Step 5: Solve for x
    x = 3,716,001,467.58/69,687.45
  6. Step 6: Final answer
    x = 53,323.83

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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.