Home / 90,918.65-136,440.38-31,754.43

Finding the Fourth Proportional to 90,918.65, 136,440.38 and 31,754.43

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Solution

The fourth proportional to 90,918.65, 136,440.38 and 31,754.43 is: 47,653.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,918.65 : 136,440.38 = 31,754.43 : x
  2. Step 2: Convert to fraction form
    90,918.65/136,440.38 = 31,754.43/x
  3. Step 3: Cross multiply
    90,918.65x = 136,440.38 × 31,754.43
  4. Step 4: Simplify right side
    90,918.65x = 4,332,586,575.27
  5. Step 5: Solve for x
    x = 4,332,586,575.27/90,918.65
  6. Step 6: Final answer
    x = 47,653.44

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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.