Home / 87,071.28-120,145.04-48,832.80

Finding the Fourth Proportional to 87,071.28, 120,145.04 and 48,832.80

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Solution

The fourth proportional to 87,071.28, 120,145.04 and 48,832.80 is: 67,381.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,071.28 : 120,145.04 = 48,832.80 : x
  2. Step 2: Convert to fraction form
    87,071.28/120,145.04 = 48,832.80/x
  3. Step 3: Cross multiply
    87,071.28x = 120,145.04 × 48,832.80
  4. Step 4: Simplify right side
    87,071.28x = 5,867,018,709.31
  5. Step 5: Solve for x
    x = 5,867,018,709.31/87,071.28
  6. Step 6: Final answer
    x = 67,381.79

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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.