Home / 90,020.70-134,947.56-30,842.31

Finding the Fourth Proportional to 90,020.70, 134,947.56 and 30,842.31

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Solution

The fourth proportional to 90,020.70, 134,947.56 and 30,842.31 is: 46,234.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,020.70 : 134,947.56 = 30,842.31 : x
  2. Step 2: Convert to fraction form
    90,020.70/134,947.56 = 30,842.31/x
  3. Step 3: Cross multiply
    90,020.70x = 134,947.56 × 30,842.31
  4. Step 4: Simplify right side
    90,020.70x = 4,162,094,479.26
  5. Step 5: Solve for x
    x = 4,162,094,479.26/90,020.70
  6. Step 6: Final answer
    x = 46,234.86

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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.