Home / 82,780.78-124,175.76-23,611.90

Finding the Fourth Proportional to 82,780.78, 124,175.76 and 23,611.90

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Solution

The fourth proportional to 82,780.78, 124,175.76 and 23,611.90 is: 35,419.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,780.78 : 124,175.76 = 23,611.90 : x
  2. Step 2: Convert to fraction form
    82,780.78/124,175.76 = 23,611.90/x
  3. Step 3: Cross multiply
    82,780.78x = 124,175.76 × 23,611.90
  4. Step 4: Simplify right side
    82,780.78x = 2,932,025,627.54
  5. Step 5: Solve for x
    x = 2,932,025,627.54/82,780.78
  6. Step 6: Final answer
    x = 35,419.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.