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Finding the Fourth Proportional to 73,177.60, 109,766.40 and 20,588.80

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Solution

The fourth proportional to 73,177.60, 109,766.40 and 20,588.80 is: 30,883.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,177.60 : 109,766.40 = 20,588.80 : x
  2. Step 2: Convert to fraction form
    73,177.60/109,766.40 = 20,588.80/x
  3. Step 3: Cross multiply
    73,177.60x = 109,766.40 × 20,588.80
  4. Step 4: Simplify right side
    73,177.60x = 2,259,958,456.32
  5. Step 5: Solve for x
    x = 2,259,958,456.32/73,177.60
  6. Step 6: Final answer
    x = 30,883.20

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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.