Home / 90,751.14-136,165.68-31,554.54

Finding the Fourth Proportional to 90,751.14, 136,165.68 and 31,554.54

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Solution

The fourth proportional to 90,751.14, 136,165.68 and 31,554.54 is: 47,345.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,751.14 : 136,165.68 = 31,554.54 : x
  2. Step 2: Convert to fraction form
    90,751.14/136,165.68 = 31,554.54/x
  3. Step 3: Cross multiply
    90,751.14x = 136,165.68 × 31,554.54
  4. Step 4: Simplify right side
    90,751.14x = 4,296,645,396.19
  5. Step 5: Solve for x
    x = 4,296,645,396.19/90,751.14
  6. Step 6: Final answer
    x = 47,345.36

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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.