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Finding the Fourth Proportional to 75,485.60, 113,228.40 and 43,992.80

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Solution

The fourth proportional to 75,485.60, 113,228.40 and 43,992.80 is: 65,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,485.60 : 113,228.40 = 43,992.80 : x
  2. Step 2: Convert to fraction form
    75,485.60/113,228.40 = 43,992.80/x
  3. Step 3: Cross multiply
    75,485.60x = 113,228.40 × 43,992.80
  4. Step 4: Simplify right side
    75,485.60x = 4,981,234,355.52
  5. Step 5: Solve for x
    x = 4,981,234,355.52/75,485.60
  6. Step 6: Final answer
    x = 65,989.20

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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.