Home / 45,189.30-67,778.16-11,911.98

Finding the Fourth Proportional to 45,189.30, 67,778.16 and 11,911.98

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Solution

The fourth proportional to 45,189.30, 67,778.16 and 11,911.98 is: 17,866.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,189.30 : 67,778.16 = 11,911.98 : x
  2. Step 2: Convert to fraction form
    45,189.30/67,778.16 = 11,911.98/x
  3. Step 3: Cross multiply
    45,189.30x = 67,778.16 × 11,911.98
  4. Step 4: Simplify right side
    45,189.30x = 807,372,086.36
  5. Step 5: Solve for x
    x = 807,372,086.36/45,189.30
  6. Step 6: Final answer
    x = 17,866.44

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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.