Home / 90,747.11-136,159.68-31,550.51

Finding the Fourth Proportional to 90,747.11, 136,159.68 and 31,550.51

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Solution

The fourth proportional to 90,747.11, 136,159.68 and 31,550.51 is: 47,339.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,747.11 : 136,159.68 = 31,550.51 : x
  2. Step 2: Convert to fraction form
    90,747.11/136,159.68 = 31,550.51/x
  3. Step 3: Cross multiply
    90,747.11x = 136,159.68 × 31,550.51
  4. Step 4: Simplify right side
    90,747.11x = 4,295,907,345.44
  5. Step 5: Solve for x
    x = 4,295,907,345.44/90,747.11
  6. Step 6: Final answer
    x = 47,339.33

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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.