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Finding the Fourth Proportional to 55,332, 82,998.72 and 18,396

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Solution

The fourth proportional to 55,332, 82,998.72 and 18,396 is: 27,594.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,332 : 82,998.72 = 18,396 : x
  2. Step 2: Convert to fraction form
    55,332/82,998.72 = 18,396/x
  3. Step 3: Cross multiply
    55,332x = 82,998.72 × 18,396
  4. Step 4: Simplify right side
    55,332x = 1,526,844,453.12
  5. Step 5: Solve for x
    x = 1,526,844,453.12/55,332
  6. Step 6: Final answer
    x = 27,594.24

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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.