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Finding the Fourth Proportional to 52,790.76, 79,186.22 and 21,647.88

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Solution

The fourth proportional to 52,790.76, 79,186.22 and 21,647.88 is: 32,471.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,790.76 : 79,186.22 = 21,647.88 : x
  2. Step 2: Convert to fraction form
    52,790.76/79,186.22 = 21,647.88/x
  3. Step 3: Cross multiply
    52,790.76x = 79,186.22 × 21,647.88
  4. Step 4: Simplify right side
    52,790.76x = 1,714,213,788.21
  5. Step 5: Solve for x
    x = 1,714,213,788.21/52,790.76
  6. Step 6: Final answer
    x = 32,471.85

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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.