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Finding the Fourth Proportional to 86,173.84, 129,262.38 and 27,008.20

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Solution

The fourth proportional to 86,173.84, 129,262.38 and 27,008.20 is: 40,512.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,173.84 : 129,262.38 = 27,008.20 : x
  2. Step 2: Convert to fraction form
    86,173.84/129,262.38 = 27,008.20/x
  3. Step 3: Cross multiply
    86,173.84x = 129,262.38 × 27,008.20
  4. Step 4: Simplify right side
    86,173.84x = 3,491,144,211.52
  5. Step 5: Solve for x
    x = 3,491,144,211.52/86,173.84
  6. Step 6: Final answer
    x = 40,512.81

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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.