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Finding the Fourth Proportional to 66,990.42, 92,447.94 and 36,778.56

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Solution

The fourth proportional to 66,990.42, 92,447.94 and 36,778.56 is: 50,755.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,990.42 : 92,447.94 = 36,778.56 : x
  2. Step 2: Convert to fraction form
    66,990.42/92,447.94 = 36,778.56/x
  3. Step 3: Cross multiply
    66,990.42x = 92,447.94 × 36,778.56
  4. Step 4: Simplify right side
    66,990.42x = 3,400,102,108.17
  5. Step 5: Solve for x
    x = 3,400,102,108.17/66,990.42
  6. Step 6: Final answer
    x = 50,755.05

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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.