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Finding the Fourth Proportional to 79,449.57, 109,659.50 and 45,477.75

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Solution

The fourth proportional to 79,449.57, 109,659.50 and 45,477.75 is: 62,770.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,449.57 : 109,659.50 = 45,477.75 : x
  2. Step 2: Convert to fraction form
    79,449.57/109,659.50 = 45,477.75/x
  3. Step 3: Cross multiply
    79,449.57x = 109,659.50 × 45,477.75
  4. Step 4: Simplify right side
    79,449.57x = 4,987,067,326.13
  5. Step 5: Solve for x
    x = 4,987,067,326.13/79,449.57
  6. Step 6: Final answer
    x = 62,770.22

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1.5x scale

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.