Home / 45,711.36-68,571.90-12,431.97

Finding the Fourth Proportional to 45,711.36, 68,571.90 and 12,431.97

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Solution

The fourth proportional to 45,711.36, 68,571.90 and 12,431.97 is: 18,649.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,711.36 : 68,571.90 = 12,431.97 : x
  2. Step 2: Convert to fraction form
    45,711.36/68,571.90 = 12,431.97/x
  3. Step 3: Cross multiply
    45,711.36x = 68,571.90 × 12,431.97
  4. Step 4: Simplify right side
    45,711.36x = 852,483,803.64
  5. Step 5: Solve for x
    x = 852,483,803.64/45,711.36
  6. Step 6: Final answer
    x = 18,649.28

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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.