Home / 45,391.47-68,087.21-12,111.66

Finding the Fourth Proportional to 45,391.47, 68,087.21 and 12,111.66

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Solution

The fourth proportional to 45,391.47, 68,087.21 and 12,111.66 is: 18,167.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,391.47 : 68,087.21 = 12,111.66 : x
  2. Step 2: Convert to fraction form
    45,391.47/68,087.21 = 12,111.66/x
  3. Step 3: Cross multiply
    45,391.47x = 68,087.21 × 12,111.66
  4. Step 4: Simplify right side
    45,391.47x = 824,649,137.87
  5. Step 5: Solve for x
    x = 824,649,137.87/45,391.47
  6. Step 6: Final answer
    x = 18,167.49

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Similar ratio
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1.5x scale

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.