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Finding the Fourth Proportional to 47,665.76, 71,499.04 and 12,127.11

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Solution

The fourth proportional to 47,665.76, 71,499.04 and 12,127.11 is: 18,190.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,665.76 : 71,499.04 = 12,127.11 : x
  2. Step 2: Convert to fraction form
    47,665.76/71,499.04 = 12,127.11/x
  3. Step 3: Cross multiply
    47,665.76x = 71,499.04 × 12,127.11
  4. Step 4: Simplify right side
    47,665.76x = 867,076,424.54
  5. Step 5: Solve for x
    x = 867,076,424.54/47,665.76
  6. Step 6: Final answer
    x = 18,190.76

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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.