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Finding the Fourth Proportional to 72,797.22, 109,213.96 and 57,860.70

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Solution

The fourth proportional to 72,797.22, 109,213.96 and 57,860.70 is: 86,805.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,797.22 : 109,213.96 = 57,860.70 : x
  2. Step 2: Convert to fraction form
    72,797.22/109,213.96 = 57,860.70/x
  3. Step 3: Cross multiply
    72,797.22x = 109,213.96 × 57,860.70
  4. Step 4: Simplify right side
    72,797.22x = 6,319,196,175.37
  5. Step 5: Solve for x
    x = 6,319,196,175.37/72,797.22
  6. Step 6: Final answer
    x = 86,805.46

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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.