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Finding the Fourth Proportional to 90,048.78, 134,965.80 and 41,952.87

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Solution

The fourth proportional to 90,048.78, 134,965.80 and 41,952.87 is: 62,879.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,048.78 : 134,965.80 = 41,952.87 : x
  2. Step 2: Convert to fraction form
    90,048.78/134,965.80 = 41,952.87/x
  3. Step 3: Cross multiply
    90,048.78x = 134,965.80 × 41,952.87
  4. Step 4: Simplify right side
    90,048.78x = 5,662,202,661.85
  5. Step 5: Solve for x
    x = 5,662,202,661.85/90,048.78
  6. Step 6: Final answer
    x = 62,879.28

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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.