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Finding the Fourth Proportional to 90,361.59, 135,358.31 and 42,832.62

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Solution

The fourth proportional to 90,361.59, 135,358.31 and 42,832.62 is: 64,161.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,361.59 : 135,358.31 = 42,832.62 : x
  2. Step 2: Convert to fraction form
    90,361.59/135,358.31 = 42,832.62/x
  3. Step 3: Cross multiply
    90,361.59x = 135,358.31 × 42,832.62
  4. Step 4: Simplify right side
    90,361.59x = 5,797,750,165.12
  5. Step 5: Solve for x
    x = 5,797,750,165.12/90,361.59
  6. Step 6: Final answer
    x = 64,161.67

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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.