Home / 55,072.78-76,002.09-38,968.96

Finding the Fourth Proportional to 55,072.78, 76,002.09 and 38,968.96

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Solution

The fourth proportional to 55,072.78, 76,002.09 and 38,968.96 is: 53,778.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,072.78 : 76,002.09 = 38,968.96 : x
  2. Step 2: Convert to fraction form
    55,072.78/76,002.09 = 38,968.96/x
  3. Step 3: Cross multiply
    55,072.78x = 76,002.09 × 38,968.96
  4. Step 4: Simplify right side
    55,072.78x = 2,961,722,405.13
  5. Step 5: Solve for x
    x = 2,961,722,405.13/55,072.78
  6. Step 6: Final answer
    x = 53,778.33

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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.