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Finding the Fourth Proportional to 72,962.37, 109,433.84 and 20,377.17

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Solution

The fourth proportional to 72,962.37, 109,433.84 and 20,377.17 is: 30,563.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,962.37 : 109,433.84 = 20,377.17 : x
  2. Step 2: Convert to fraction form
    72,962.37/109,433.84 = 20,377.17/x
  3. Step 3: Cross multiply
    72,962.37x = 109,433.84 × 20,377.17
  4. Step 4: Simplify right side
    72,962.37x = 2,229,951,859.55
  5. Step 5: Solve for x
    x = 2,229,951,859.55/72,962.37
  6. Step 6: Final answer
    x = 30,563.04

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1.5x scale

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.