Home / 87,340.50-120,549.33-55,503.18

Finding the Fourth Proportional to 87,340.50, 120,549.33 and 55,503.18

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Solution

The fourth proportional to 87,340.50, 120,549.33 and 55,503.18 is: 76,606.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,340.50 : 120,549.33 = 55,503.18 : x
  2. Step 2: Convert to fraction form
    87,340.50/120,549.33 = 55,503.18/x
  3. Step 3: Cross multiply
    87,340.50x = 120,549.33 × 55,503.18
  4. Step 4: Simplify right side
    87,340.50x = 6,690,871,161.87
  5. Step 5: Solve for x
    x = 6,690,871,161.87/87,340.50
  6. Step 6: Final answer
    x = 76,606.74

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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.