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Finding the Fourth Proportional to 71,944.76, 99,282.41 and 39,682.38

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Solution

The fourth proportional to 71,944.76, 99,282.41 and 39,682.38 is: 54,760.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,944.76 : 99,282.41 = 39,682.38 : x
  2. Step 2: Convert to fraction form
    71,944.76/99,282.41 = 39,682.38/x
  3. Step 3: Cross multiply
    71,944.76x = 99,282.41 × 39,682.38
  4. Step 4: Simplify right side
    71,944.76x = 3,939,762,122.52
  5. Step 5: Solve for x
    x = 3,939,762,122.52/71,944.76
  6. Step 6: Final answer
    x = 54,760.93

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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.