Home / 90,510.48-135,767.43-31,348.08

Finding the Fourth Proportional to 90,510.48, 135,767.43 and 31,348.08

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Solution

The fourth proportional to 90,510.48, 135,767.43 and 31,348.08 is: 47,022.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,510.48 : 135,767.43 = 31,348.08 : x
  2. Step 2: Convert to fraction form
    90,510.48/135,767.43 = 31,348.08/x
  3. Step 3: Cross multiply
    90,510.48x = 135,767.43 × 31,348.08
  4. Step 4: Simplify right side
    90,510.48x = 4,256,048,257.03
  5. Step 5: Solve for x
    x = 4,256,048,257.03/90,510.48
  6. Step 6: Final answer
    x = 47,022.71

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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.