Home / 39,716.55-54,856.71-31,678.11

Finding the Fourth Proportional to 39,716.55, 54,856.71 and 31,678.11

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Solution

The fourth proportional to 39,716.55, 54,856.71 and 31,678.11 is: 43,753.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,716.55 : 54,856.71 = 31,678.11 : x
  2. Step 2: Convert to fraction form
    39,716.55/54,856.71 = 31,678.11/x
  3. Step 3: Cross multiply
    39,716.55x = 54,856.71 × 31,678.11
  4. Step 4: Simplify right side
    39,716.55x = 1,737,756,893.62
  5. Step 5: Solve for x
    x = 1,737,756,893.62/39,716.55
  6. Step 6: Final answer
    x = 43,753.97

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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.