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Finding the Fourth Proportional to 67,656.60, 101,491.30 and 18,408.60

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Solution

The fourth proportional to 67,656.60, 101,491.30 and 18,408.60 is: 27,614.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,656.60 : 101,491.30 = 18,408.60 : x
  2. Step 2: Convert to fraction form
    67,656.60/101,491.30 = 18,408.60/x
  3. Step 3: Cross multiply
    67,656.60x = 101,491.30 × 18,408.60
  4. Step 4: Simplify right side
    67,656.60x = 1,868,312,745.18
  5. Step 5: Solve for x
    x = 1,868,312,745.18/67,656.60
  6. Step 6: Final answer
    x = 27,614.64

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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.