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Finding the Fourth Proportional to 67,745.63, 101,618.44 and 28,281.21

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Solution

The fourth proportional to 67,745.63, 101,618.44 and 28,281.21 is: 42,421.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,745.63 : 101,618.44 = 28,281.21 : x
  2. Step 2: Convert to fraction form
    67,745.63/101,618.44 = 28,281.21/x
  3. Step 3: Cross multiply
    67,745.63x = 101,618.44 × 28,281.21
  4. Step 4: Simplify right side
    67,745.63x = 2,873,892,300.11
  5. Step 5: Solve for x
    x = 2,873,892,300.11/67,745.63
  6. Step 6: Final answer
    x = 42,421.81

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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.