Home / 90,541.87-135,767.23-31,361.65

Finding the Fourth Proportional to 90,541.87, 135,767.23 and 31,361.65

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Solution

The fourth proportional to 90,541.87, 135,767.23 and 31,361.65 is: 47,026.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,541.87 : 135,767.23 = 31,361.65 : x
  2. Step 2: Convert to fraction form
    90,541.87/135,767.23 = 31,361.65/x
  3. Step 3: Cross multiply
    90,541.87x = 135,767.23 × 31,361.65
  4. Step 4: Simplify right side
    90,541.87x = 4,257,884,348.73
  5. Step 5: Solve for x
    x = 4,257,884,348.73/90,541.87
  6. Step 6: Final answer
    x = 47,026.69

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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.