Home / 39,934.32-55,052.10-31,421.76

Finding the Fourth Proportional to 39,934.32, 55,052.10 and 31,421.76

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Solution

The fourth proportional to 39,934.32, 55,052.10 and 31,421.76 is: 43,316.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,934.32 : 55,052.10 = 31,421.76 : x
  2. Step 2: Convert to fraction form
    39,934.32/55,052.10 = 31,421.76/x
  3. Step 3: Cross multiply
    39,934.32x = 55,052.10 × 31,421.76
  4. Step 4: Simplify right side
    39,934.32x = 1,729,833,873.70
  5. Step 5: Solve for x
    x = 1,729,833,873.70/39,934.32
  6. Step 6: Final answer
    x = 43,316.97

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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.