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Finding the Fourth Proportional to 47,813.80, 71,753.10 and 31,133.20

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Solution

The fourth proportional to 47,813.80, 71,753.10 and 31,133.20 is: 46,720.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,813.80 : 71,753.10 = 31,133.20 : x
  2. Step 2: Convert to fraction form
    47,813.80/71,753.10 = 31,133.20/x
  3. Step 3: Cross multiply
    47,813.80x = 71,753.10 × 31,133.20
  4. Step 4: Simplify right side
    47,813.80x = 2,233,903,612.92
  5. Step 5: Solve for x
    x = 2,233,903,612.92/47,813.80
  6. Step 6: Final answer
    x = 46,720.90

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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.