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Finding the Fourth Proportional to 95,018.80, 142,470.60 and 47,578.72

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Solution

The fourth proportional to 95,018.80, 142,470.60 and 47,578.72 is: 71,339.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,018.80 : 142,470.60 = 47,578.72 : x
  2. Step 2: Convert to fraction form
    95,018.80/142,470.60 = 47,578.72/x
  3. Step 3: Cross multiply
    95,018.80x = 142,470.60 × 47,578.72
  4. Step 4: Simplify right side
    95,018.80x = 6,778,568,785.63
  5. Step 5: Solve for x
    x = 6,778,568,785.63/95,018.80
  6. Step 6: Final answer
    x = 71,339.24

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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.