Home / 82,940.10-124,410.15-20,610.60

Finding the Fourth Proportional to 82,940.10, 124,410.15 and 20,610.60

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Solution

The fourth proportional to 82,940.10, 124,410.15 and 20,610.60 is: 30,915.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,940.10 : 124,410.15 = 20,610.60 : x
  2. Step 2: Convert to fraction form
    82,940.10/124,410.15 = 20,610.60/x
  3. Step 3: Cross multiply
    82,940.10x = 124,410.15 × 20,610.60
  4. Step 4: Simplify right side
    82,940.10x = 2,564,167,837.59
  5. Step 5: Solve for x
    x = 2,564,167,837.59/82,940.10
  6. Step 6: Final answer
    x = 30,915.90

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1.5x scale

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.