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Finding the Fourth Proportional to 34,687.66, 47,863.84 and 20,342.06

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Solution

The fourth proportional to 34,687.66, 47,863.84 and 20,342.06 is: 28,069.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,687.66 : 47,863.84 = 20,342.06 : x
  2. Step 2: Convert to fraction form
    34,687.66/47,863.84 = 20,342.06/x
  3. Step 3: Cross multiply
    34,687.66x = 47,863.84 × 20,342.06
  4. Step 4: Simplify right side
    34,687.66x = 973,649,105.11
  5. Step 5: Solve for x
    x = 973,649,105.11/34,687.66
  6. Step 6: Final answer
    x = 28,069.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.