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Finding the Fourth Proportional to 79,991.92, 119,980.86 and 73,727.92

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Solution

The fourth proportional to 79,991.92, 119,980.86 and 73,727.92 is: 110,585.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,991.92 : 119,980.86 = 73,727.92 : x
  2. Step 2: Convert to fraction form
    79,991.92/119,980.86 = 73,727.92/x
  3. Step 3: Cross multiply
    79,991.92x = 119,980.86 × 73,727.92
  4. Step 4: Simplify right side
    79,991.92x = 8,845,939,247.61
  5. Step 5: Solve for x
    x = 8,845,939,247.61/79,991.92
  6. Step 6: Final answer
    x = 110,585.41

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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.