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Finding the Fourth Proportional to 47,688.70, 71,511.45 and 18,096.70

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Solution

The fourth proportional to 47,688.70, 71,511.45 and 18,096.70 is: 27,136.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,688.70 : 71,511.45 = 18,096.70 : x
  2. Step 2: Convert to fraction form
    47,688.70/71,511.45 = 18,096.70/x
  3. Step 3: Cross multiply
    47,688.70x = 71,511.45 × 18,096.70
  4. Step 4: Simplify right side
    47,688.70x = 1,294,121,257.22
  5. Step 5: Solve for x
    x = 1,294,121,257.22/47,688.70
  6. Step 6: Final answer
    x = 27,136.85

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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.