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Finding the Fourth Proportional to 79,589.54, 109,849.16 and 45,620.80

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Solution

The fourth proportional to 79,589.54, 109,849.16 and 45,620.80 is: 62,965.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,589.54 : 109,849.16 = 45,620.80 : x
  2. Step 2: Convert to fraction form
    79,589.54/109,849.16 = 45,620.80/x
  3. Step 3: Cross multiply
    79,589.54x = 109,849.16 × 45,620.80
  4. Step 4: Simplify right side
    79,589.54x = 5,011,406,397.96
  5. Step 5: Solve for x
    x = 5,011,406,397.96/79,589.54
  6. Step 6: Final answer
    x = 62,965.64

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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.