Home / 87,065.28-120,078.72-58,389.66

Finding the Fourth Proportional to 87,065.28, 120,078.72 and 58,389.66

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Solution

The fourth proportional to 87,065.28, 120,078.72 and 58,389.66 is: 80,529.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,065.28 : 120,078.72 = 58,389.66 : x
  2. Step 2: Convert to fraction form
    87,065.28/120,078.72 = 58,389.66/x
  3. Step 3: Cross multiply
    87,065.28x = 120,078.72 × 58,389.66
  4. Step 4: Simplify right side
    87,065.28x = 7,011,355,634.04
  5. Step 5: Solve for x
    x = 7,011,355,634.04/87,065.28
  6. Step 6: Final answer
    x = 80,529.87

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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.