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Finding the Fourth Proportional to 67,065.93, 100,573.76 and 19,671.21

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Solution

The fourth proportional to 67,065.93, 100,573.76 and 19,671.21 is: 29,499.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,065.93 : 100,573.76 = 19,671.21 : x
  2. Step 2: Convert to fraction form
    67,065.93/100,573.76 = 19,671.21/x
  3. Step 3: Cross multiply
    67,065.93x = 100,573.76 × 19,671.21
  4. Step 4: Simplify right side
    67,065.93x = 1,978,407,455.09
  5. Step 5: Solve for x
    x = 1,978,407,455.09/67,065.93
  6. Step 6: Final answer
    x = 29,499.44

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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.