Home / 103,781.42-155,568.10-40,514.55

Finding the Fourth Proportional to 103,781.42, 155,568.10 and 40,514.55

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Solution

The fourth proportional to 103,781.42, 155,568.10 and 40,514.55 is: 60,731.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,781.42 : 155,568.10 = 40,514.55 : x
  2. Step 2: Convert to fraction form
    103,781.42/155,568.10 = 40,514.55/x
  3. Step 3: Cross multiply
    103,781.42x = 155,568.10 × 40,514.55
  4. Step 4: Simplify right side
    103,781.42x = 6,302,771,565.86
  5. Step 5: Solve for x
    x = 6,302,771,565.86/103,781.42
  6. Step 6: Final answer
    x = 60,731.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.