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Finding the Fourth Proportional to 52,872.96, 79,303.68 and 21,708.30

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Solution

The fourth proportional to 52,872.96, 79,303.68 and 21,708.30 is: 32,560.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,872.96 : 79,303.68 = 21,708.30 : x
  2. Step 2: Convert to fraction form
    52,872.96/79,303.68 = 21,708.30/x
  3. Step 3: Cross multiply
    52,872.96x = 79,303.68 × 21,708.30
  4. Step 4: Simplify right side
    52,872.96x = 1,721,548,076.54
  5. Step 5: Solve for x
    x = 1,721,548,076.54/52,872.96
  6. Step 6: Final answer
    x = 32,560.09

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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.