Home / 45,442.28-68,140.78-28,789.63

Finding the Fourth Proportional to 45,442.28, 68,140.78 and 28,789.63

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Solution

The fourth proportional to 45,442.28, 68,140.78 and 28,789.63 is: 43,170.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,442.28 : 68,140.78 = 28,789.63 : x
  2. Step 2: Convert to fraction form
    45,442.28/68,140.78 = 28,789.63/x
  3. Step 3: Cross multiply
    45,442.28x = 68,140.78 × 28,789.63
  4. Step 4: Simplify right side
    45,442.28x = 1,961,747,601.79
  5. Step 5: Solve for x
    x = 1,961,747,601.79/45,442.28
  6. Step 6: Final answer
    x = 43,170.09

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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.