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Finding the Fourth Proportional to 53,221.92, 79,810.92 and 18,164.40

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Solution

The fourth proportional to 53,221.92, 79,810.92 and 18,164.40 is: 27,239.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,221.92 : 79,810.92 = 18,164.40 : x
  2. Step 2: Convert to fraction form
    53,221.92/79,810.92 = 18,164.40/x
  3. Step 3: Cross multiply
    53,221.92x = 79,810.92 × 18,164.40
  4. Step 4: Simplify right side
    53,221.92x = 1,449,717,475.25
  5. Step 5: Solve for x
    x = 1,449,717,475.25/53,221.92
  6. Step 6: Final answer
    x = 27,239.11

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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.