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Finding the Fourth Proportional to 87,537.78, 120,803.57 and 47,793.78

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Solution

The fourth proportional to 87,537.78, 120,803.57 and 47,793.78 is: 65,956.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,537.78 : 120,803.57 = 47,793.78 : x
  2. Step 2: Convert to fraction form
    87,537.78/120,803.57 = 47,793.78/x
  3. Step 3: Cross multiply
    87,537.78x = 120,803.57 × 47,793.78
  4. Step 4: Simplify right side
    87,537.78x = 5,773,659,247.79
  5. Step 5: Solve for x
    x = 5,773,659,247.79/87,537.78
  6. Step 6: Final answer
    x = 65,956.20

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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.