Home / 78,318.96-117,489.24-25,733.76

Finding the Fourth Proportional to 78,318.96, 117,489.24 and 25,733.76

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Solution

The fourth proportional to 78,318.96, 117,489.24 and 25,733.76 is: 38,604.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,318.96 : 117,489.24 = 25,733.76 : x
  2. Step 2: Convert to fraction form
    78,318.96/117,489.24 = 25,733.76/x
  3. Step 3: Cross multiply
    78,318.96x = 117,489.24 × 25,733.76
  4. Step 4: Simplify right side
    78,318.96x = 3,023,439,904.74
  5. Step 5: Solve for x
    x = 3,023,439,904.74/78,318.96
  6. Step 6: Final answer
    x = 38,604.19

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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.