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Finding the Fourth Proportional to 55,358.75, 76,360.97 and 39,448.34

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Solution

The fourth proportional to 55,358.75, 76,360.97 and 39,448.34 is: 54,414.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,358.75 : 76,360.97 = 39,448.34 : x
  2. Step 2: Convert to fraction form
    55,358.75/76,360.97 = 39,448.34/x
  3. Step 3: Cross multiply
    55,358.75x = 76,360.97 × 39,448.34
  4. Step 4: Simplify right side
    55,358.75x = 3,012,313,507.29
  5. Step 5: Solve for x
    x = 3,012,313,507.29/55,358.75
  6. Step 6: Final answer
    x = 54,414.41

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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.