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Finding the Fourth Proportional to 103,615.70, 155,487.55 and 41,279.70

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Solution

The fourth proportional to 103,615.70, 155,487.55 and 41,279.70 is: 61,945.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,615.70 : 155,487.55 = 41,279.70 : x
  2. Step 2: Convert to fraction form
    103,615.70/155,487.55 = 41,279.70/x
  3. Step 3: Cross multiply
    103,615.70x = 155,487.55 × 41,279.70
  4. Step 4: Simplify right side
    103,615.70x = 6,418,479,417.74
  5. Step 5: Solve for x
    x = 6,418,479,417.74/103,615.70
  6. Step 6: Final answer
    x = 61,945.05

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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.