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Finding the Fourth Proportional to 91,175.60, 136,698.60 and 41,279.60

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Solution

The fourth proportional to 91,175.60, 136,698.60 and 41,279.60 is: 61,890.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,175.60 : 136,698.60 = 41,279.60 : x
  2. Step 2: Convert to fraction form
    91,175.60/136,698.60 = 41,279.60/x
  3. Step 3: Cross multiply
    91,175.60x = 136,698.60 × 41,279.60
  4. Step 4: Simplify right side
    91,175.60x = 5,642,863,528.56
  5. Step 5: Solve for x
    x = 5,642,863,528.56/91,175.60
  6. Step 6: Final answer
    x = 61,890.06

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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.