Home / 81,218.43-112,067.73-45,408.74

Finding the Fourth Proportional to 81,218.43, 112,067.73 and 45,408.74

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Solution

The fourth proportional to 81,218.43, 112,067.73 and 45,408.74 is: 62,656.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,218.43 : 112,067.73 = 45,408.74 : x
  2. Step 2: Convert to fraction form
    81,218.43/112,067.73 = 45,408.74/x
  3. Step 3: Cross multiply
    81,218.43x = 112,067.73 × 45,408.74
  4. Step 4: Simplify right side
    81,218.43x = 5,088,853,853.62
  5. Step 5: Solve for x
    x = 5,088,853,853.62/81,218.43
  6. Step 6: Final answer
    x = 62,656.39

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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.