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Finding the Fourth Proportional to 55,807.21, 83,722.93 and 18,371.08

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Solution

The fourth proportional to 55,807.21, 83,722.93 and 18,371.08 is: 27,560.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,807.21 : 83,722.93 = 18,371.08 : x
  2. Step 2: Convert to fraction form
    55,807.21/83,722.93 = 18,371.08/x
  3. Step 3: Cross multiply
    55,807.21x = 83,722.93 × 18,371.08
  4. Step 4: Simplify right side
    55,807.21x = 1,538,080,644.86
  5. Step 5: Solve for x
    x = 1,538,080,644.86/55,807.21
  6. Step 6: Final answer
    x = 27,560.61

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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.