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Finding the Fourth Proportional to 67,263.15, 100,893.11 and 20,516.43

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Solution

The fourth proportional to 67,263.15, 100,893.11 and 20,516.43 is: 30,774.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,263.15 : 100,893.11 = 20,516.43 : x
  2. Step 2: Convert to fraction form
    67,263.15/100,893.11 = 20,516.43/x
  3. Step 3: Cross multiply
    67,263.15x = 100,893.11 × 20,516.43
  4. Step 4: Simplify right side
    67,263.15x = 2,069,966,326.22
  5. Step 5: Solve for x
    x = 2,069,966,326.22/67,263.15
  6. Step 6: Final answer
    x = 30,774.15

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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.