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Finding the Fourth Proportional to 67,650.78, 101,464.29 and 20,904.06

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Solution

The fourth proportional to 67,650.78, 101,464.29 and 20,904.06 is: 31,352.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,650.78 : 101,464.29 = 20,904.06 : x
  2. Step 2: Convert to fraction form
    67,650.78/101,464.29 = 20,904.06/x
  3. Step 3: Cross multiply
    67,650.78x = 101,464.29 × 20,904.06
  4. Step 4: Simplify right side
    67,650.78x = 2,121,015,606.02
  5. Step 5: Solve for x
    x = 2,121,015,606.02/67,650.78
  6. Step 6: Final answer
    x = 31,352.42

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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.