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Finding the Fourth Proportional to 90,002.66, 135,018.39 and 45,611.42

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Solution

The fourth proportional to 90,002.66, 135,018.39 and 45,611.42 is: 68,424.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,002.66 : 135,018.39 = 45,611.42 : x
  2. Step 2: Convert to fraction form
    90,002.66/135,018.39 = 45,611.42/x
  3. Step 3: Cross multiply
    90,002.66x = 135,018.39 × 45,611.42
  4. Step 4: Simplify right side
    90,002.66x = 6,158,380,494.01
  5. Step 5: Solve for x
    x = 6,158,380,494.01/90,002.66
  6. Step 6: Final answer
    x = 68,424.43

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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.