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Finding the Fourth Proportional to 72,794.44, 109,209.79 and 57,857.91

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Solution

The fourth proportional to 72,794.44, 109,209.79 and 57,857.91 is: 86,801.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,794.44 : 109,209.79 = 57,857.91 : x
  2. Step 2: Convert to fraction form
    72,794.44/109,209.79 = 57,857.91/x
  3. Step 3: Cross multiply
    72,794.44x = 109,209.79 × 57,857.91
  4. Step 4: Simplify right side
    72,794.44x = 6,318,650,478.03
  5. Step 5: Solve for x
    x = 6,318,650,478.03/72,794.44
  6. Step 6: Final answer
    x = 86,801.28

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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.