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Finding the Fourth Proportional to 40,908.34, 61,419.97 and 20,932.12

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Solution

The fourth proportional to 40,908.34, 61,419.97 and 20,932.12 is: 31,427.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,908.34 : 61,419.97 = 20,932.12 : x
  2. Step 2: Convert to fraction form
    40,908.34/61,419.97 = 20,932.12/x
  3. Step 3: Cross multiply
    40,908.34x = 61,419.97 × 20,932.12
  4. Step 4: Simplify right side
    40,908.34x = 1,285,650,285.38
  5. Step 5: Solve for x
    x = 1,285,650,285.38/40,908.34
  6. Step 6: Final answer
    x = 31,427.58

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1.5x scale

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.