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Finding the Fourth Proportional to 71,738.96, 107,611.16 and 36,637.61

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Solution

The fourth proportional to 71,738.96, 107,611.16 and 36,637.61 is: 54,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,738.96 : 107,611.16 = 36,637.61 : x
  2. Step 2: Convert to fraction form
    71,738.96/107,611.16 = 36,637.61/x
  3. Step 3: Cross multiply
    71,738.96x = 107,611.16 × 36,637.61
  4. Step 4: Simplify right side
    71,738.96x = 3,942,614,990.48
  5. Step 5: Solve for x
    x = 3,942,614,990.48/71,738.96
  6. Step 6: Final answer
    x = 54,957.80

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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.