Home / 87,718.82-131,577.08-21,158.48

Finding the Fourth Proportional to 87,718.82, 131,577.08 and 21,158.48

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Solution

The fourth proportional to 87,718.82, 131,577.08 and 21,158.48 is: 31,737.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,718.82 : 131,577.08 = 21,158.48 : x
  2. Step 2: Convert to fraction form
    87,718.82/131,577.08 = 21,158.48/x
  3. Step 3: Cross multiply
    87,718.82x = 131,577.08 × 21,158.48
  4. Step 4: Simplify right side
    87,718.82x = 2,783,971,238.79
  5. Step 5: Solve for x
    x = 2,783,971,238.79/87,718.82
  6. Step 6: Final answer
    x = 31,737.45

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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.