Home / 90,478.92-135,703.26-28,144.56

Finding the Fourth Proportional to 90,478.92, 135,703.26 and 28,144.56

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Solution

The fourth proportional to 90,478.92, 135,703.26 and 28,144.56 is: 42,212.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,478.92 : 135,703.26 = 28,144.56 : x
  2. Step 2: Convert to fraction form
    90,478.92/135,703.26 = 28,144.56/x
  3. Step 3: Cross multiply
    90,478.92x = 135,703.26 × 28,144.56
  4. Step 4: Simplify right side
    90,478.92x = 3,819,308,543.27
  5. Step 5: Solve for x
    x = 3,819,308,543.27/90,478.92
  6. Step 6: Final answer
    x = 42,212.14

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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.