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Finding the Fourth Proportional to 53,188.88, 79,796.99 and 19,909.42

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Solution

The fourth proportional to 53,188.88, 79,796.99 and 19,909.42 is: 29,869.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,188.88 : 79,796.99 = 19,909.42 : x
  2. Step 2: Convert to fraction form
    53,188.88/79,796.99 = 19,909.42/x
  3. Step 3: Cross multiply
    53,188.88x = 79,796.99 × 19,909.42
  4. Step 4: Simplify right side
    53,188.88x = 1,588,711,489.61
  5. Step 5: Solve for x
    x = 1,588,711,489.61/53,188.88
  6. Step 6: Final answer
    x = 29,869.24

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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.