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Finding the Fourth Proportional to 73,277.20, 109,915.80 and 43,752.70

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Solution

The fourth proportional to 73,277.20, 109,915.80 and 43,752.70 is: 65,629.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,277.20 : 109,915.80 = 43,752.70 : x
  2. Step 2: Convert to fraction form
    73,277.20/109,915.80 = 43,752.70/x
  3. Step 3: Cross multiply
    73,277.20x = 109,915.80 × 43,752.70
  4. Step 4: Simplify right side
    73,277.20x = 4,809,113,022.66
  5. Step 5: Solve for x
    x = 4,809,113,022.66/73,277.20
  6. Step 6: Final answer
    x = 65,629.05

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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.