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Finding the Fourth Proportional to 53,987.96, 80,991.44 and 18,440.92

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Solution

The fourth proportional to 53,987.96, 80,991.44 and 18,440.92 is: 27,664.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,987.96 : 80,991.44 = 18,440.92 : x
  2. Step 2: Convert to fraction form
    53,987.96/80,991.44 = 18,440.92/x
  3. Step 3: Cross multiply
    53,987.96x = 80,991.44 × 18,440.92
  4. Step 4: Simplify right side
    53,987.96x = 1,493,556,665.72
  5. Step 5: Solve for x
    x = 1,493,556,665.72/53,987.96
  6. Step 6: Final answer
    x = 27,664.62

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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.