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Finding the Fourth Proportional to 60,331.85, 90,510.78 and 18,208.41

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Solution

The fourth proportional to 60,331.85, 90,510.78 and 18,208.41 is: 27,316.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,331.85 : 90,510.78 = 18,208.41 : x
  2. Step 2: Convert to fraction form
    60,331.85/90,510.78 = 18,208.41/x
  3. Step 3: Cross multiply
    60,331.85x = 90,510.78 × 18,208.41
  4. Step 4: Simplify right side
    60,331.85x = 1,648,057,391.66
  5. Step 5: Solve for x
    x = 1,648,057,391.66/60,331.85
  6. Step 6: Final answer
    x = 27,316.54

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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.