Home / 55,171.34-76,135.71-30,020.78

Finding the Fourth Proportional to 55,171.34, 76,135.71 and 30,020.78

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Solution

The fourth proportional to 55,171.34, 76,135.71 and 30,020.78 is: 41,428.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,171.34 : 76,135.71 = 30,020.78 : x
  2. Step 2: Convert to fraction form
    55,171.34/76,135.71 = 30,020.78/x
  3. Step 3: Cross multiply
    55,171.34x = 76,135.71 × 30,020.78
  4. Step 4: Simplify right side
    55,171.34x = 2,285,653,400.05
  5. Step 5: Solve for x
    x = 2,285,653,400.05/55,171.34
  6. Step 6: Final answer
    x = 41,428.27

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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.