Home / 87,746.99-131,620.49-21,187.05

Finding the Fourth Proportional to 87,746.99, 131,620.49 and 21,187.05

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Solution

The fourth proportional to 87,746.99, 131,620.49 and 21,187.05 is: 31,780.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,746.99 : 131,620.49 = 21,187.05 : x
  2. Step 2: Convert to fraction form
    87,746.99/131,620.49 = 21,187.05/x
  3. Step 3: Cross multiply
    87,746.99x = 131,620.49 × 21,187.05
  4. Step 4: Simplify right side
    87,746.99x = 2,788,649,796.72
  5. Step 5: Solve for x
    x = 2,788,649,796.72/87,746.99
  6. Step 6: Final answer
    x = 31,780.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.