Home / 87,718.13-131,576.04-21,157.76

Finding the Fourth Proportional to 87,718.13, 131,576.04 and 21,157.76

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Solution

The fourth proportional to 87,718.13, 131,576.04 and 21,157.76 is: 31,736.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,718.13 : 131,576.04 = 21,157.76 : x
  2. Step 2: Convert to fraction form
    87,718.13/131,576.04 = 21,157.76/x
  3. Step 3: Cross multiply
    87,718.13x = 131,576.04 × 21,157.76
  4. Step 4: Simplify right side
    87,718.13x = 2,783,854,276.07
  5. Step 5: Solve for x
    x = 2,783,854,276.07/87,718.13
  6. Step 6: Final answer
    x = 31,736.36

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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.