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Finding the Fourth Proportional to 53,221.86, 79,832.79 and 18,161.52

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Solution

The fourth proportional to 53,221.86, 79,832.79 and 18,161.52 is: 27,242.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,221.86 : 79,832.79 = 18,161.52 : x
  2. Step 2: Convert to fraction form
    53,221.86/79,832.79 = 18,161.52/x
  3. Step 3: Cross multiply
    53,221.86x = 79,832.79 × 18,161.52
  4. Step 4: Simplify right side
    53,221.86x = 1,449,884,512.87
  5. Step 5: Solve for x
    x = 1,449,884,512.87/53,221.86
  6. Step 6: Final answer
    x = 27,242.27

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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.