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Finding the Fourth Proportional to 86,915.44, 119,946.16 and 49,188.88

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Solution

The fourth proportional to 86,915.44, 119,946.16 and 49,188.88 is: 67,882.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,915.44 : 119,946.16 = 49,188.88 : x
  2. Step 2: Convert to fraction form
    86,915.44/119,946.16 = 49,188.88/x
  3. Step 3: Cross multiply
    86,915.44x = 119,946.16 × 49,188.88
  4. Step 4: Simplify right side
    86,915.44x = 5,900,017,270.70
  5. Step 5: Solve for x
    x = 5,900,017,270.70/86,915.44
  6. Step 6: Final answer
    x = 67,882.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.