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Finding the Fourth Proportional to 83,679.20, 125,479.20 and 48,629.60

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Solution

The fourth proportional to 83,679.20, 125,479.20 and 48,629.60 is: 72,921.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,679.20 : 125,479.20 = 48,629.60 : x
  2. Step 2: Convert to fraction form
    83,679.20/125,479.20 = 48,629.60/x
  3. Step 3: Cross multiply
    83,679.20x = 125,479.20 × 48,629.60
  4. Step 4: Simplify right side
    83,679.20x = 6,102,003,304.32
  5. Step 5: Solve for x
    x = 6,102,003,304.32/83,679.20
  6. Step 6: Final answer
    x = 72,921.39

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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.