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Finding the Fourth Proportional to 55,912, 83,868 and 14,359

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Solution

The fourth proportional to 55,912, 83,868 and 14,359 is: 21,538.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,912 : 83,868 = 14,359 : x
  2. Step 2: Convert to fraction form
    55,912/83,868 = 14,359/x
  3. Step 3: Cross multiply
    55,912x = 83,868 × 14,359
  4. Step 4: Simplify right side
    55,912x = 1,204,260,612
  5. Step 5: Solve for x
    x = 1,204,260,612/55,912
  6. Step 6: Final answer
    x = 21,538.50

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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.