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Finding the Fourth Proportional to 84,036.69, 126,042.48 and 27,915.84

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Solution

The fourth proportional to 84,036.69, 126,042.48 and 27,915.84 is: 41,869.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,036.69 : 126,042.48 = 27,915.84 : x
  2. Step 2: Convert to fraction form
    84,036.69/126,042.48 = 27,915.84/x
  3. Step 3: Cross multiply
    84,036.69x = 126,042.48 × 27,915.84
  4. Step 4: Simplify right side
    84,036.69x = 3,518,581,704.88
  5. Step 5: Solve for x
    x = 3,518,581,704.88/84,036.69
  6. Step 6: Final answer
    x = 41,869.59

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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.