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Finding the Fourth Proportional to 73,266.70, 109,900.05 and 28,870.60

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Solution

The fourth proportional to 73,266.70, 109,900.05 and 28,870.60 is: 43,305.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,266.70 : 109,900.05 = 28,870.60 : x
  2. Step 2: Convert to fraction form
    73,266.70/109,900.05 = 28,870.60/x
  3. Step 3: Cross multiply
    73,266.70x = 109,900.05 × 28,870.60
  4. Step 4: Simplify right side
    73,266.70x = 3,172,880,383.53
  5. Step 5: Solve for x
    x = 3,172,880,383.53/73,266.70
  6. Step 6: Final answer
    x = 43,305.90

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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.