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Finding the Fourth Proportional to 40,499.20, 60,748.80 and 14,206.60

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Solution

The fourth proportional to 40,499.20, 60,748.80 and 14,206.60 is: 21,309.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,499.20 : 60,748.80 = 14,206.60 : x
  2. Step 2: Convert to fraction form
    40,499.20/60,748.80 = 14,206.60/x
  3. Step 3: Cross multiply
    40,499.20x = 60,748.80 × 14,206.60
  4. Step 4: Simplify right side
    40,499.20x = 863,033,902.08
  5. Step 5: Solve for x
    x = 863,033,902.08/40,499.20
  6. Step 6: Final answer
    x = 21,309.90

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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.