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Finding the Fourth Proportional to 52,652.01, 78,991.86 and 18,921.44

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Solution

The fourth proportional to 52,652.01, 78,991.86 and 18,921.44 is: 28,387.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,652.01 : 78,991.86 = 18,921.44 : x
  2. Step 2: Convert to fraction form
    52,652.01/78,991.86 = 18,921.44/x
  3. Step 3: Cross multiply
    52,652.01x = 78,991.86 × 18,921.44
  4. Step 4: Simplify right side
    52,652.01x = 1,494,639,344.52
  5. Step 5: Solve for x
    x = 1,494,639,344.52/52,652.01
  6. Step 6: Final answer
    x = 28,387.13

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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.