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Finding the Fourth Proportional to 72,949.53, 109,380.48 and 28,523.36

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Solution

The fourth proportional to 72,949.53, 109,380.48 and 28,523.36 is: 42,767.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,949.53 : 109,380.48 = 28,523.36 : x
  2. Step 2: Convert to fraction form
    72,949.53/109,380.48 = 28,523.36/x
  3. Step 3: Cross multiply
    72,949.53x = 109,380.48 × 28,523.36
  4. Step 4: Simplify right side
    72,949.53x = 3,119,898,261.11
  5. Step 5: Solve for x
    x = 3,119,898,261.11/72,949.53
  6. Step 6: Final answer
    x = 42,767.90

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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.