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Finding the Fourth Proportional to 80,140.68, 110,556.90 and 51,855.48

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Solution

The fourth proportional to 80,140.68, 110,556.90 and 51,855.48 is: 71,536.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,140.68 : 110,556.90 = 51,855.48 : x
  2. Step 2: Convert to fraction form
    80,140.68/110,556.90 = 51,855.48/x
  3. Step 3: Cross multiply
    80,140.68x = 110,556.90 × 51,855.48
  4. Step 4: Simplify right side
    80,140.68x = 5,732,981,116.81
  5. Step 5: Solve for x
    x = 5,732,981,116.81/80,140.68
  6. Step 6: Final answer
    x = 71,536.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.