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Finding the Fourth Proportional to 47,998.40, 71,998.81 and 39,103.99

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Solution

The fourth proportional to 47,998.40, 71,998.81 and 39,103.99 is: 58,656.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,998.40 : 71,998.81 = 39,103.99 : x
  2. Step 2: Convert to fraction form
    47,998.40/71,998.81 = 39,103.99/x
  3. Step 3: Cross multiply
    47,998.40x = 71,998.81 × 39,103.99
  4. Step 4: Simplify right side
    47,998.40x = 2,815,440,468.49
  5. Step 5: Solve for x
    x = 2,815,440,468.49/47,998.40
  6. Step 6: Final answer
    x = 58,656.97

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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.