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Finding the Fourth Proportional to 79,183.86, 109,267.80 and 45,191.40

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Solution

The fourth proportional to 79,183.86, 109,267.80 and 45,191.40 is: 62,360.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,183.86 : 109,267.80 = 45,191.40 : x
  2. Step 2: Convert to fraction form
    79,183.86/109,267.80 = 45,191.40/x
  3. Step 3: Cross multiply
    79,183.86x = 109,267.80 × 45,191.40
  4. Step 4: Simplify right side
    79,183.86x = 4,937,964,856.92
  5. Step 5: Solve for x
    x = 4,937,964,856.92/79,183.86
  6. Step 6: Final answer
    x = 62,360.75

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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.