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Finding the Fourth Proportional to 78,761.60, 118,101.60 and 23,350.40

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Solution

The fourth proportional to 78,761.60, 118,101.60 and 23,350.40 is: 35,013.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,761.60 : 118,101.60 = 23,350.40 : x
  2. Step 2: Convert to fraction form
    78,761.60/118,101.60 = 23,350.40/x
  3. Step 3: Cross multiply
    78,761.60x = 118,101.60 × 23,350.40
  4. Step 4: Simplify right side
    78,761.60x = 2,757,719,600.64
  5. Step 5: Solve for x
    x = 2,757,719,600.64/78,761.60
  6. Step 6: Final answer
    x = 35,013.50

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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.