Home / 105,514.35-145,613.46-57,768.02

Finding the Fourth Proportional to 105,514.35, 145,613.46 and 57,768.02

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Solution

The fourth proportional to 105,514.35, 145,613.46 and 57,768.02 is: 79,721.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,514.35 : 145,613.46 = 57,768.02 : x
  2. Step 2: Convert to fraction form
    105,514.35/145,613.46 = 57,768.02/x
  3. Step 3: Cross multiply
    105,514.35x = 145,613.46 × 57,768.02
  4. Step 4: Simplify right side
    105,514.35x = 8,411,801,304.16
  5. Step 5: Solve for x
    x = 8,411,801,304.16/105,514.35
  6. Step 6: Final answer
    x = 79,721.87

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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.