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Finding the Fourth Proportional to 90,378.56, 124,723.34 and 50,093.22

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Solution

The fourth proportional to 90,378.56, 124,723.34 and 50,093.22 is: 69,129.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,378.56 : 124,723.34 = 50,093.22 : x
  2. Step 2: Convert to fraction form
    90,378.56/124,723.34 = 50,093.22/x
  3. Step 3: Cross multiply
    90,378.56x = 124,723.34 × 50,093.22
  4. Step 4: Simplify right side
    90,378.56x = 6,247,793,709.75
  5. Step 5: Solve for x
    x = 6,247,793,709.75/90,378.56
  6. Step 6: Final answer
    x = 69,129.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.