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Finding the Fourth Proportional to 78,344.70, 117,517.05 and 62,792.70

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Solution

The fourth proportional to 78,344.70, 117,517.05 and 62,792.70 is: 94,189.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,344.70 : 117,517.05 = 62,792.70 : x
  2. Step 2: Convert to fraction form
    78,344.70/117,517.05 = 62,792.70/x
  3. Step 3: Cross multiply
    78,344.70x = 117,517.05 × 62,792.70
  4. Step 4: Simplify right side
    78,344.70x = 7,379,212,865.54
  5. Step 5: Solve for x
    x = 7,379,212,865.54/78,344.70
  6. Step 6: Final answer
    x = 94,189.05

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1.5x scale

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.