Home / 79,211.22-109,324.45-45,221.12

Finding the Fourth Proportional to 79,211.22, 109,324.45 and 45,221.12

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Solution

The fourth proportional to 79,211.22, 109,324.45 and 45,221.12 is: 62,412.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,211.22 : 109,324.45 = 45,221.12 : x
  2. Step 2: Convert to fraction form
    79,211.22/109,324.45 = 45,221.12/x
  3. Step 3: Cross multiply
    79,211.22x = 109,324.45 × 45,221.12
  4. Step 4: Simplify right side
    79,211.22x = 4,943,773,992.25
  5. Step 5: Solve for x
    x = 4,943,773,992.25/79,211.22
  6. Step 6: Final answer
    x = 62,412.55

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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.