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Finding the Fourth Proportional to 99,822.88, 137,817.75 and 63,544.80

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Solution

The fourth proportional to 99,822.88, 137,817.75 and 63,544.80 is: 87,731.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,822.88 : 137,817.75 = 63,544.80 : x
  2. Step 2: Convert to fraction form
    99,822.88/137,817.75 = 63,544.80/x
  3. Step 3: Cross multiply
    99,822.88x = 137,817.75 × 63,544.80
  4. Step 4: Simplify right side
    99,822.88x = 8,757,602,115.31
  5. Step 5: Solve for x
    x = 8,757,602,115.31/99,822.88
  6. Step 6: Final answer
    x = 87,731.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.