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Finding the Fourth Proportional to 53,893.91, 80,841.48 and 20,615.66

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Solution

The fourth proportional to 53,893.91, 80,841.48 and 20,615.66 is: 30,923.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,893.91 : 80,841.48 = 20,615.66 : x
  2. Step 2: Convert to fraction form
    53,893.91/80,841.48 = 20,615.66/x
  3. Step 3: Cross multiply
    53,893.91x = 80,841.48 × 20,615.66
  4. Step 4: Simplify right side
    53,893.91x = 1,666,600,741.95
  5. Step 5: Solve for x
    x = 1,666,600,741.95/53,893.91
  6. Step 6: Final answer
    x = 30,923.73

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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.