Home / 63,172.78-87,178.38-34,878.64

Finding the Fourth Proportional to 63,172.78, 87,178.38 and 34,878.64

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Solution

The fourth proportional to 63,172.78, 87,178.38 and 34,878.64 is: 48,132.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,172.78 : 87,178.38 = 34,878.64 : x
  2. Step 2: Convert to fraction form
    63,172.78/87,178.38 = 34,878.64/x
  3. Step 3: Cross multiply
    63,172.78x = 87,178.38 × 34,878.64
  4. Step 4: Simplify right side
    63,172.78x = 3,040,663,331.80
  5. Step 5: Solve for x
    x = 3,040,663,331.80/63,172.78
  6. Step 6: Final answer
    x = 48,132.49

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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.