Home / 87,329.32-120,625.86-64,709.80

Finding the Fourth Proportional to 87,329.32, 120,625.86 and 64,709.80

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Solution

The fourth proportional to 87,329.32, 120,625.86 and 64,709.80 is: 89,382.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,329.32 : 120,625.86 = 64,709.80 : x
  2. Step 2: Convert to fraction form
    87,329.32/120,625.86 = 64,709.80/x
  3. Step 3: Cross multiply
    87,329.32x = 120,625.86 × 64,709.80
  4. Step 4: Simplify right side
    87,329.32x = 7,805,675,275.43
  5. Step 5: Solve for x
    x = 7,805,675,275.43/87,329.32
  6. Step 6: Final answer
    x = 89,382.07

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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.