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Finding the Fourth Proportional to 55,750.80, 76,942.48 and 38,750.48

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Solution

The fourth proportional to 55,750.80, 76,942.48 and 38,750.48 is: 53,480.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,750.80 : 76,942.48 = 38,750.48 : x
  2. Step 2: Convert to fraction form
    55,750.80/76,942.48 = 38,750.48/x
  3. Step 3: Cross multiply
    55,750.80x = 76,942.48 × 38,750.48
  4. Step 4: Simplify right side
    55,750.80x = 2,981,558,032.39
  5. Step 5: Solve for x
    x = 2,981,558,032.39/55,750.80
  6. Step 6: Final answer
    x = 53,480.09

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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.