Home / 87,478.56-120,708.34-49,240.08

Finding the Fourth Proportional to 87,478.56, 120,708.34 and 49,240.08

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Solution

The fourth proportional to 87,478.56, 120,708.34 and 49,240.08 is: 67,944.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,478.56 : 120,708.34 = 49,240.08 : x
  2. Step 2: Convert to fraction form
    87,478.56/120,708.34 = 49,240.08/x
  3. Step 3: Cross multiply
    87,478.56x = 120,708.34 × 49,240.08
  4. Step 4: Simplify right side
    87,478.56x = 5,943,688,318.27
  5. Step 5: Solve for x
    x = 5,943,688,318.27/87,478.56
  6. Step 6: Final answer
    x = 67,944.51

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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.