Home / 78,910.48-118,366.17-26,319.81

Finding the Fourth Proportional to 78,910.48, 118,366.17 and 26,319.81

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Solution

The fourth proportional to 78,910.48, 118,366.17 and 26,319.81 is: 39,479.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,910.48 : 118,366.17 = 26,319.81 : x
  2. Step 2: Convert to fraction form
    78,910.48/118,366.17 = 26,319.81/x
  3. Step 3: Cross multiply
    78,910.48x = 118,366.17 × 26,319.81
  4. Step 4: Simplify right side
    78,910.48x = 3,115,375,104.83
  5. Step 5: Solve for x
    x = 3,115,375,104.83/78,910.48
  6. Step 6: Final answer
    x = 39,479.87

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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.