Home / 87,959.88-131,937.92-21,400.36

Finding the Fourth Proportional to 87,959.88, 131,937.92 and 21,400.36

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Solution

The fourth proportional to 87,959.88, 131,937.92 and 21,400.36 is: 32,100.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,959.88 : 131,937.92 = 21,400.36 : x
  2. Step 2: Convert to fraction form
    87,959.88/131,937.92 = 21,400.36/x
  3. Step 3: Cross multiply
    87,959.88x = 131,937.92 × 21,400.36
  4. Step 4: Simplify right side
    87,959.88x = 2,823,518,985.65
  5. Step 5: Solve for x
    x = 2,823,518,985.65/87,959.88
  6. Step 6: Final answer
    x = 32,100.08

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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.