Home / 79,379.39-109,543.19-43,080.05

Finding the Fourth Proportional to 79,379.39, 109,543.19 and 43,080.05

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Solution

The fourth proportional to 79,379.39, 109,543.19 and 43,080.05 is: 59,450.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,379.39 : 109,543.19 = 43,080.05 : x
  2. Step 2: Convert to fraction form
    79,379.39/109,543.19 = 43,080.05/x
  3. Step 3: Cross multiply
    79,379.39x = 109,543.19 × 43,080.05
  4. Step 4: Simplify right side
    79,379.39x = 4,719,126,160.82
  5. Step 5: Solve for x
    x = 4,719,126,160.82/79,379.39
  6. Step 6: Final answer
    x = 59,450.27

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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.