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Finding the Fourth Proportional to 80,362.48, 120,543.24 and 43,659.76

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Solution

The fourth proportional to 80,362.48, 120,543.24 and 43,659.76 is: 65,489.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,362.48 : 120,543.24 = 43,659.76 : x
  2. Step 2: Convert to fraction form
    80,362.48/120,543.24 = 43,659.76/x
  3. Step 3: Cross multiply
    80,362.48x = 120,543.24 × 43,659.76
  4. Step 4: Simplify right side
    80,362.48x = 5,262,888,928.02
  5. Step 5: Solve for x
    x = 5,262,888,928.02/80,362.48
  6. Step 6: Final answer
    x = 65,489.38

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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.