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Finding the Fourth Proportional to 99,463.50, 137,259.90 and 54,751.50

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Solution

The fourth proportional to 99,463.50, 137,259.90 and 54,751.50 is: 75,557.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,463.50 : 137,259.90 = 54,751.50 : x
  2. Step 2: Convert to fraction form
    99,463.50/137,259.90 = 54,751.50/x
  3. Step 3: Cross multiply
    99,463.50x = 137,259.90 × 54,751.50
  4. Step 4: Simplify right side
    99,463.50x = 7,515,185,414.85
  5. Step 5: Solve for x
    x = 7,515,185,414.85/99,463.50
  6. Step 6: Final answer
    x = 75,557.22

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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.