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Finding the Fourth Proportional to 66,989.70, 92,446.20 and 36,776.34

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Solution

The fourth proportional to 66,989.70, 92,446.20 and 36,776.34 is: 50,751.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,989.70 : 92,446.20 = 36,776.34 : x
  2. Step 2: Convert to fraction form
    66,989.70/92,446.20 = 36,776.34/x
  3. Step 3: Cross multiply
    66,989.70x = 92,446.20 × 36,776.34
  4. Step 4: Simplify right side
    66,989.70x = 3,399,832,882.91
  5. Step 5: Solve for x
    x = 3,399,832,882.91/66,989.70
  6. Step 6: Final answer
    x = 50,751.58

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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.