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Finding the Fourth Proportional to 48,847.50, 67,400.94 and 29,990.70

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Solution

The fourth proportional to 48,847.50, 67,400.94 and 29,990.70 is: 41,381.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,847.50 : 67,400.94 = 29,990.70 : x
  2. Step 2: Convert to fraction form
    48,847.50/67,400.94 = 29,990.70/x
  3. Step 3: Cross multiply
    48,847.50x = 67,400.94 × 29,990.70
  4. Step 4: Simplify right side
    48,847.50x = 2,021,401,371.26
  5. Step 5: Solve for x
    x = 2,021,401,371.26/48,847.50
  6. Step 6: Final answer
    x = 41,381.88

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1.5x scale

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.