Home / 78,269.44-117,419.28-36,717.52

Finding the Fourth Proportional to 78,269.44, 117,419.28 and 36,717.52

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Solution

The fourth proportional to 78,269.44, 117,419.28 and 36,717.52 is: 55,083.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,269.44 : 117,419.28 = 36,717.52 : x
  2. Step 2: Convert to fraction form
    78,269.44/117,419.28 = 36,717.52/x
  3. Step 3: Cross multiply
    78,269.44x = 117,419.28 × 36,717.52
  4. Step 4: Simplify right side
    78,269.44x = 4,311,344,761.79
  5. Step 5: Solve for x
    x = 4,311,344,761.79/78,269.44
  6. Step 6: Final answer
    x = 55,083.37

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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.