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Finding the Fourth Proportional to 60,505.96, 90,768.30 and 18,949

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Solution

The fourth proportional to 60,505.96, 90,768.30 and 18,949 is: 28,426.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,505.96 : 90,768.30 = 18,949 : x
  2. Step 2: Convert to fraction form
    60,505.96/90,768.30 = 18,949/x
  3. Step 3: Cross multiply
    60,505.96x = 90,768.30 × 18,949
  4. Step 4: Simplify right side
    60,505.96x = 1,719,968,516.70
  5. Step 5: Solve for x
    x = 1,719,968,516.70/60,505.96
  6. Step 6: Final answer
    x = 28,426.43

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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.