Home / 40,399.80-60,578.10-14,105.40

Finding the Fourth Proportional to 40,399.80, 60,578.10 and 14,105.40

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Solution

The fourth proportional to 40,399.80, 60,578.10 and 14,105.40 is: 21,150.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,399.80 : 60,578.10 = 14,105.40 : x
  2. Step 2: Convert to fraction form
    40,399.80/60,578.10 = 14,105.40/x
  3. Step 3: Cross multiply
    40,399.80x = 60,578.10 × 14,105.40
  4. Step 4: Simplify right side
    40,399.80x = 854,478,331.74
  5. Step 5: Solve for x
    x = 854,478,331.74/40,399.80
  6. Step 6: Final answer
    x = 21,150.56

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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.