Home / 86,573.30-129,872.10-27,402.80

Finding the Fourth Proportional to 86,573.30, 129,872.10 and 27,402.80

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Solution

The fourth proportional to 86,573.30, 129,872.10 and 27,402.80 is: 41,108.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,573.30 : 129,872.10 = 27,402.80 : x
  2. Step 2: Convert to fraction form
    86,573.30/129,872.10 = 27,402.80/x
  3. Step 3: Cross multiply
    86,573.30x = 129,872.10 × 27,402.80
  4. Step 4: Simplify right side
    86,573.30x = 3,558,859,181.88
  5. Step 5: Solve for x
    x = 3,558,859,181.88/86,573.30
  6. Step 6: Final answer
    x = 41,108.05

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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.