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Finding the Fourth Proportional to 73,602.96, 110,403 and 21,012

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Solution

The fourth proportional to 73,602.96, 110,403 and 21,012 is: 31,517.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,602.96 : 110,403 = 21,012 : x
  2. Step 2: Convert to fraction form
    73,602.96/110,403 = 21,012/x
  3. Step 3: Cross multiply
    73,602.96x = 110,403 × 21,012
  4. Step 4: Simplify right side
    73,602.96x = 2,319,787,836
  5. Step 5: Solve for x
    x = 2,319,787,836/73,602.96
  6. Step 6: Final answer
    x = 31,517.59

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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.