Home / 82,587.40-123,257-74,615.80

Finding the Fourth Proportional to 82,587.40, 123,257 and 74,615.80

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Solution

The fourth proportional to 82,587.40, 123,257 and 74,615.80 is: 111,359.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,587.40 : 123,257 = 74,615.80 : x
  2. Step 2: Convert to fraction form
    82,587.40/123,257 = 74,615.80/x
  3. Step 3: Cross multiply
    82,587.40x = 123,257 × 74,615.80
  4. Step 4: Simplify right side
    82,587.40x = 9,196,919,660.60
  5. Step 5: Solve for x
    x = 9,196,919,660.60/82,587.40
  6. Step 6: Final answer
    x = 111,359.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.