Home / 90,379.14-135,478.46-31,177.04

Finding the Fourth Proportional to 90,379.14, 135,478.46 and 31,177.04

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Solution

The fourth proportional to 90,379.14, 135,478.46 and 31,177.04 is: 46,734.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,379.14 : 135,478.46 = 31,177.04 : x
  2. Step 2: Convert to fraction form
    90,379.14/135,478.46 = 31,177.04/x
  3. Step 3: Cross multiply
    90,379.14x = 135,478.46 × 31,177.04
  4. Step 4: Simplify right side
    90,379.14x = 4,223,817,366.56
  5. Step 5: Solve for x
    x = 4,223,817,366.56/90,379.14
  6. Step 6: Final answer
    x = 46,734.43

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1.5x scale

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.