Home / 45,110.78-67,664.55-11,830.58

Finding the Fourth Proportional to 45,110.78, 67,664.55 and 11,830.58

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Solution

The fourth proportional to 45,110.78, 67,664.55 and 11,830.58 is: 17,745.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,110.78 : 67,664.55 = 11,830.58 : x
  2. Step 2: Convert to fraction form
    45,110.78/67,664.55 = 11,830.58/x
  3. Step 3: Cross multiply
    45,110.78x = 67,664.55 × 11,830.58
  4. Step 4: Simplify right side
    45,110.78x = 800,510,871.94
  5. Step 5: Solve for x
    x = 800,510,871.94/45,110.78
  6. Step 6: Final answer
    x = 17,745.45

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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.