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Finding the Fourth Proportional to 86,915.88, 130,396.68 and 27,752.76

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Solution

The fourth proportional to 86,915.88, 130,396.68 and 27,752.76 is: 41,636.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,915.88 : 130,396.68 = 27,752.76 : x
  2. Step 2: Convert to fraction form
    86,915.88/130,396.68 = 27,752.76/x
  3. Step 3: Cross multiply
    86,915.88x = 130,396.68 × 27,752.76
  4. Step 4: Simplify right side
    86,915.88x = 3,618,867,764.84
  5. Step 5: Solve for x
    x = 3,618,867,764.84/86,915.88
  6. Step 6: Final answer
    x = 41,636.44

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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.