Home / 98,514.89-135,843.05-66,628.43

Finding the Fourth Proportional to 98,514.89, 135,843.05 and 66,628.43

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Solution

The fourth proportional to 98,514.89, 135,843.05 and 66,628.43 is: 91,874.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,514.89 : 135,843.05 = 66,628.43 : x
  2. Step 2: Convert to fraction form
    98,514.89/135,843.05 = 66,628.43/x
  3. Step 3: Cross multiply
    98,514.89x = 135,843.05 × 66,628.43
  4. Step 4: Simplify right side
    98,514.89x = 9,051,009,147.91
  5. Step 5: Solve for x
    x = 9,051,009,147.91/98,514.89
  6. Step 6: Final answer
    x = 91,874.53

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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.