Home / 79,211.20-109,309.77-43,400.45

Finding the Fourth Proportional to 79,211.20, 109,309.77 and 43,400.45

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Solution

The fourth proportional to 79,211.20, 109,309.77 and 43,400.45 is: 59,891.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,211.20 : 109,309.77 = 43,400.45 : x
  2. Step 2: Convert to fraction form
    79,211.20/109,309.77 = 43,400.45/x
  3. Step 3: Cross multiply
    79,211.20x = 109,309.77 × 43,400.45
  4. Step 4: Simplify right side
    79,211.20x = 4,744,093,207.40
  5. Step 5: Solve for x
    x = 4,744,093,207.40/79,211.20
  6. Step 6: Final answer
    x = 59,891.70

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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.