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Finding the Fourth Proportional to 103,412.70, 155,132.28 and 36,859.55

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Solution

The fourth proportional to 103,412.70, 155,132.28 and 36,859.55 is: 55,294.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,412.70 : 155,132.28 = 36,859.55 : x
  2. Step 2: Convert to fraction form
    103,412.70/155,132.28 = 36,859.55/x
  3. Step 3: Cross multiply
    103,412.70x = 155,132.28 × 36,859.55
  4. Step 4: Simplify right side
    103,412.70x = 5,718,105,255.61
  5. Step 5: Solve for x
    x = 5,718,105,255.61/103,412.70
  6. Step 6: Final answer
    x = 55,294.03

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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.