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Finding the Fourth Proportional to 87,324.56, 120,507.90 and 47,580.56

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Solution

The fourth proportional to 87,324.56, 120,507.90 and 47,580.56 is: 65,661.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,324.56 : 120,507.90 = 47,580.56 : x
  2. Step 2: Convert to fraction form
    87,324.56/120,507.90 = 47,580.56/x
  3. Step 3: Cross multiply
    87,324.56x = 120,507.90 × 47,580.56
  4. Step 4: Simplify right side
    87,324.56x = 5,733,833,489.27
  5. Step 5: Solve for x
    x = 5,733,833,489.27/87,324.56
  6. Step 6: Final answer
    x = 65,661.18

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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.