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Finding the Fourth Proportional to 80,539.98, 120,673.53 and 49,309.98

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Solution

The fourth proportional to 80,539.98, 120,673.53 and 49,309.98 is: 73,881.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,539.98 : 120,673.53 = 49,309.98 : x
  2. Step 2: Convert to fraction form
    80,539.98/120,673.53 = 49,309.98/x
  3. Step 3: Cross multiply
    80,539.98x = 120,673.53 × 49,309.98
  4. Step 4: Simplify right side
    80,539.98x = 5,950,409,350.83
  5. Step 5: Solve for x
    x = 5,950,409,350.83/80,539.98
  6. Step 6: Final answer
    x = 73,881.44

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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.