Home / 87,156.20-120,271.92-49,437.56

Finding the Fourth Proportional to 87,156.20, 120,271.92 and 49,437.56

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Solution

The fourth proportional to 87,156.20, 120,271.92 and 49,437.56 is: 68,221.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,156.20 : 120,271.92 = 49,437.56 : x
  2. Step 2: Convert to fraction form
    87,156.20/120,271.92 = 49,437.56/x
  3. Step 3: Cross multiply
    87,156.20x = 120,271.92 × 49,437.56
  4. Step 4: Simplify right side
    87,156.20x = 5,945,950,261.32
  5. Step 5: Solve for x
    x = 5,945,950,261.32/87,156.20
  6. Step 6: Final answer
    x = 68,221.77

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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.