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Finding the Fourth Proportional to 73,028.80, 109,586.40 and 53,257.60

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Solution

The fourth proportional to 73,028.80, 109,586.40 and 53,257.60 is: 79,917.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,028.80 : 109,586.40 = 53,257.60 : x
  2. Step 2: Convert to fraction form
    73,028.80/109,586.40 = 53,257.60/x
  3. Step 3: Cross multiply
    73,028.80x = 109,586.40 × 53,257.60
  4. Step 4: Simplify right side
    73,028.80x = 5,836,308,656.64
  5. Step 5: Solve for x
    x = 5,836,308,656.64/73,028.80
  6. Step 6: Final answer
    x = 79,917.90

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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.