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Finding the Fourth Proportional to 60,144, 90,216.38 and 15,770.36

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Solution

The fourth proportional to 60,144, 90,216.38 and 15,770.36 is: 23,655.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,144 : 90,216.38 = 15,770.36 : x
  2. Step 2: Convert to fraction form
    60,144/90,216.38 = 15,770.36/x
  3. Step 3: Cross multiply
    60,144x = 90,216.38 × 15,770.36
  4. Step 4: Simplify right side
    60,144x = 1,422,744,260.56
  5. Step 5: Solve for x
    x = 1,422,744,260.56/60,144
  6. Step 6: Final answer
    x = 23,655.63

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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.