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Finding the Fourth Proportional to 79,920.80, 110,290.92 and 43,622.57

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Solution

The fourth proportional to 79,920.80, 110,290.92 and 43,622.57 is: 60,199.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,920.80 : 110,290.92 = 43,622.57 : x
  2. Step 2: Convert to fraction form
    79,920.80/110,290.92 = 43,622.57/x
  3. Step 3: Cross multiply
    79,920.80x = 110,290.92 × 43,622.57
  4. Step 4: Simplify right side
    79,920.80x = 4,811,173,378.06
  5. Step 5: Solve for x
    x = 4,811,173,378.06/79,920.80
  6. Step 6: Final answer
    x = 60,199.26

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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.