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Finding the Fourth Proportional to 73,014.60, 109,446.30 and 39,664.20

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Solution

The fourth proportional to 73,014.60, 109,446.30 and 39,664.20 is: 59,455.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,014.60 : 109,446.30 = 39,664.20 : x
  2. Step 2: Convert to fraction form
    73,014.60/109,446.30 = 39,664.20/x
  3. Step 3: Cross multiply
    73,014.60x = 109,446.30 × 39,664.20
  4. Step 4: Simplify right side
    73,014.60x = 4,341,099,932.46
  5. Step 5: Solve for x
    x = 4,341,099,932.46/73,014.60
  6. Step 6: Final answer
    x = 59,455.23

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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.