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Finding the Fourth Proportional to 72,918.31, 109,379.82 and 22,998.88

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Solution

The fourth proportional to 72,918.31, 109,379.82 and 22,998.88 is: 34,499.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,918.31 : 109,379.82 = 22,998.88 : x
  2. Step 2: Convert to fraction form
    72,918.31/109,379.82 = 22,998.88/x
  3. Step 3: Cross multiply
    72,918.31x = 109,379.82 × 22,998.88
  4. Step 4: Simplify right side
    72,918.31x = 2,515,613,354.60
  5. Step 5: Solve for x
    x = 2,515,613,354.60/72,918.31
  6. Step 6: Final answer
    x = 34,499.06

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1.5x scale

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.