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Finding the Fourth Proportional to 67,636, 101,454.12 and 18,388

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Solution

The fourth proportional to 67,636, 101,454.12 and 18,388 is: 27,582.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,636 : 101,454.12 = 18,388 : x
  2. Step 2: Convert to fraction form
    67,636/101,454.12 = 18,388/x
  3. Step 3: Cross multiply
    67,636x = 101,454.12 × 18,388
  4. Step 4: Simplify right side
    67,636x = 1,865,538,358.56
  5. Step 5: Solve for x
    x = 1,865,538,358.56/67,636
  6. Step 6: Final answer
    x = 27,582.03

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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.