Home / 87,621.93-120,535.65-76,818.15

Finding the Fourth Proportional to 87,621.93, 120,535.65 and 76,818.15

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Solution

The fourth proportional to 87,621.93, 120,535.65 and 76,818.15 is: 105,673.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,621.93 : 120,535.65 = 76,818.15 : x
  2. Step 2: Convert to fraction form
    87,621.93/120,535.65 = 76,818.15/x
  3. Step 3: Cross multiply
    87,621.93x = 120,535.65 × 76,818.15
  4. Step 4: Simplify right side
    87,621.93x = 9,259,325,642.05
  5. Step 5: Solve for x
    x = 9,259,325,642.05/87,621.93
  6. Step 6: Final answer
    x = 105,673.61

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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.