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Finding the Fourth Proportional to 78,297.20, 117,445.80 and 59,634.80

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Solution

The fourth proportional to 78,297.20, 117,445.80 and 59,634.80 is: 89,452.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,297.20 : 117,445.80 = 59,634.80 : x
  2. Step 2: Convert to fraction form
    78,297.20/117,445.80 = 59,634.80/x
  3. Step 3: Cross multiply
    78,297.20x = 117,445.80 × 59,634.80
  4. Step 4: Simplify right side
    78,297.20x = 7,003,856,793.84
  5. Step 5: Solve for x
    x = 7,003,856,793.84/78,297.20
  6. Step 6: Final answer
    x = 89,452.20

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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.