Home / 78,211.26-117,314.60-19,046.07

Finding the Fourth Proportional to 78,211.26, 117,314.60 and 19,046.07

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Solution

The fourth proportional to 78,211.26, 117,314.60 and 19,046.07 is: 28,568.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,211.26 : 117,314.60 = 19,046.07 : x
  2. Step 2: Convert to fraction form
    78,211.26/117,314.60 = 19,046.07/x
  3. Step 3: Cross multiply
    78,211.26x = 117,314.60 × 19,046.07
  4. Step 4: Simplify right side
    78,211.26x = 2,234,381,988.39
  5. Step 5: Solve for x
    x = 2,234,381,988.39/78,211.26
  6. Step 6: Final answer
    x = 28,568.55

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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.