Home / 87,328.32-120,624.48-64,708.80

Finding the Fourth Proportional to 87,328.32, 120,624.48 and 64,708.80

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Solution

The fourth proportional to 87,328.32, 120,624.48 and 64,708.80 is: 89,380.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,328.32 : 120,624.48 = 64,708.80 : x
  2. Step 2: Convert to fraction form
    87,328.32/120,624.48 = 64,708.80/x
  3. Step 3: Cross multiply
    87,328.32x = 120,624.48 × 64,708.80
  4. Step 4: Simplify right side
    87,328.32x = 7,805,465,351.42
  5. Step 5: Solve for x
    x = 7,805,465,351.42/87,328.32
  6. Step 6: Final answer
    x = 89,380.69

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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.