Home / 81,249.67-112,121.22-47,259.13

Finding the Fourth Proportional to 81,249.67, 112,121.22 and 47,259.13

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Solution

The fourth proportional to 81,249.67, 112,121.22 and 47,259.13 is: 65,215.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,249.67 : 112,121.22 = 47,259.13 : x
  2. Step 2: Convert to fraction form
    81,249.67/112,121.22 = 47,259.13/x
  3. Step 3: Cross multiply
    81,249.67x = 112,121.22 × 47,259.13
  4. Step 4: Simplify right side
    81,249.67x = 5,298,751,031.44
  5. Step 5: Solve for x
    x = 5,298,751,031.44/81,249.67
  6. Step 6: Final answer
    x = 65,215.66

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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.