Home / 80,836.74-111,514.59-54,015.21

Finding the Fourth Proportional to 80,836.74, 111,514.59 and 54,015.21

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Solution

The fourth proportional to 80,836.74, 111,514.59 and 54,015.21 is: 74,514.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,836.74 : 111,514.59 = 54,015.21 : x
  2. Step 2: Convert to fraction form
    80,836.74/111,514.59 = 54,015.21/x
  3. Step 3: Cross multiply
    80,836.74x = 111,514.59 × 54,015.21
  4. Step 4: Simplify right side
    80,836.74x = 6,023,483,996.91
  5. Step 5: Solve for x
    x = 6,023,483,996.91/80,836.74
  6. Step 6: Final answer
    x = 74,514.19

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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.