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Finding the Fourth Proportional to 60,524.64, 90,789.84 and 18,972

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Solution

The fourth proportional to 60,524.64, 90,789.84 and 18,972 is: 28,458.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,524.64 : 90,789.84 = 18,972 : x
  2. Step 2: Convert to fraction form
    60,524.64/90,789.84 = 18,972/x
  3. Step 3: Cross multiply
    60,524.64x = 90,789.84 × 18,972
  4. Step 4: Simplify right side
    60,524.64x = 1,722,464,844.48
  5. Step 5: Solve for x
    x = 1,722,464,844.48/60,524.64
  6. Step 6: Final answer
    x = 28,458.90

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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.