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Finding the Fourth Proportional to 66,990.42, 100,455.60 and 22,605.66

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Solution

The fourth proportional to 66,990.42, 100,455.60 and 22,605.66 is: 33,898.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,990.42 : 100,455.60 = 22,605.66 : x
  2. Step 2: Convert to fraction form
    66,990.42/100,455.60 = 22,605.66/x
  3. Step 3: Cross multiply
    66,990.42x = 100,455.60 × 22,605.66
  4. Step 4: Simplify right side
    66,990.42x = 2,270,865,138.70
  5. Step 5: Solve for x
    x = 2,270,865,138.70/66,990.42
  6. Step 6: Final answer
    x = 33,898.36

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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.