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Finding the Fourth Proportional to 79,330.68, 109,470.78 and 43,519.86

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Solution

The fourth proportional to 79,330.68, 109,470.78 and 43,519.86 is: 60,054.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,330.68 : 109,470.78 = 43,519.86 : x
  2. Step 2: Convert to fraction form
    79,330.68/109,470.78 = 43,519.86/x
  3. Step 3: Cross multiply
    79,330.68x = 109,470.78 × 43,519.86
  4. Step 4: Simplify right side
    79,330.68x = 4,764,153,019.69
  5. Step 5: Solve for x
    x = 4,764,153,019.69/79,330.68
  6. Step 6: Final answer
    x = 60,054.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.