Home / 45,131.78-67,668.15-42,653.54

Finding the Fourth Proportional to 45,131.78, 67,668.15 and 42,653.54

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Solution

The fourth proportional to 45,131.78, 67,668.15 and 42,653.54 is: 63,952.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,131.78 : 67,668.15 = 42,653.54 : x
  2. Step 2: Convert to fraction form
    45,131.78/67,668.15 = 42,653.54/x
  3. Step 3: Cross multiply
    45,131.78x = 67,668.15 × 42,653.54
  4. Step 4: Simplify right side
    45,131.78x = 2,886,286,142.75
  5. Step 5: Solve for x
    x = 2,886,286,142.75/45,131.78
  6. Step 6: Final answer
    x = 63,952.41

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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.