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Finding the Fourth Proportional to 72,808, 109,212 and 23,560

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Solution

The fourth proportional to 72,808, 109,212 and 23,560 is: 35,340

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,808 : 109,212 = 23,560 : x
  2. Step 2: Convert to fraction form
    72,808/109,212 = 23,560/x
  3. Step 3: Cross multiply
    72,808x = 109,212 × 23,560
  4. Step 4: Simplify right side
    72,808x = 2,573,034,720
  5. Step 5: Solve for x
    x = 2,573,034,720/72,808
  6. Step 6: Final answer
    x = 35,340

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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.