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Finding the Fourth Proportional to 86,359.82, 119,168.46 and 63,711.40

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Solution

The fourth proportional to 86,359.82, 119,168.46 and 63,711.40 is: 87,915.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,359.82 : 119,168.46 = 63,711.40 : x
  2. Step 2: Convert to fraction form
    86,359.82/119,168.46 = 63,711.40/x
  3. Step 3: Cross multiply
    86,359.82x = 119,168.46 × 63,711.40
  4. Step 4: Simplify right side
    86,359.82x = 7,592,389,422.44
  5. Step 5: Solve for x
    x = 7,592,389,422.44/86,359.82
  6. Step 6: Final answer
    x = 87,915.76

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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.