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Finding the Fourth Proportional to 99,939.52, 149,909.23 and 49,969.31

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Solution

The fourth proportional to 99,939.52, 149,909.23 and 49,969.31 is: 74,953.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,939.52 : 149,909.23 = 49,969.31 : x
  2. Step 2: Convert to fraction form
    99,939.52/149,909.23 = 49,969.31/x
  3. Step 3: Cross multiply
    99,939.52x = 149,909.23 × 49,969.31
  4. Step 4: Simplify right side
    99,939.52x = 7,490,860,098.65
  5. Step 5: Solve for x
    x = 7,490,860,098.65/99,939.52
  6. Step 6: Final answer
    x = 74,953.93

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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.