Home / 87,517.08-120,723.18-55,240.20

Finding the Fourth Proportional to 87,517.08, 120,723.18 and 55,240.20

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Solution

The fourth proportional to 87,517.08, 120,723.18 and 55,240.20 is: 76,199.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,517.08 : 120,723.18 = 55,240.20 : x
  2. Step 2: Convert to fraction form
    87,517.08/120,723.18 = 55,240.20/x
  3. Step 3: Cross multiply
    87,517.08x = 120,723.18 × 55,240.20
  4. Step 4: Simplify right side
    87,517.08x = 6,668,772,607.84
  5. Step 5: Solve for x
    x = 6,668,772,607.84/87,517.08
  6. Step 6: Final answer
    x = 76,199.67

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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.