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Finding the Fourth Proportional to 80,727.60, 121,091.40 and 55,844.40

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Solution

The fourth proportional to 80,727.60, 121,091.40 and 55,844.40 is: 83,766.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,727.60 : 121,091.40 = 55,844.40 : x
  2. Step 2: Convert to fraction form
    80,727.60/121,091.40 = 55,844.40/x
  3. Step 3: Cross multiply
    80,727.60x = 121,091.40 × 55,844.40
  4. Step 4: Simplify right side
    80,727.60x = 6,762,276,578.16
  5. Step 5: Solve for x
    x = 6,762,276,578.16/80,727.60
  6. Step 6: Final answer
    x = 83,766.60

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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.