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Finding the Fourth Proportional to 48,343.20, 72,493.20 and 18,751.20

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Solution

The fourth proportional to 48,343.20, 72,493.20 and 18,751.20 is: 28,118.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,343.20 : 72,493.20 = 18,751.20 : x
  2. Step 2: Convert to fraction form
    48,343.20/72,493.20 = 18,751.20/x
  3. Step 3: Cross multiply
    48,343.20x = 72,493.20 × 18,751.20
  4. Step 4: Simplify right side
    48,343.20x = 1,359,334,491.84
  5. Step 5: Solve for x
    x = 1,359,334,491.84/48,343.20
  6. Step 6: Final answer
    x = 28,118.42

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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.