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Finding the Fourth Proportional to 90,207.54, 135,327.92 and 37,621.53

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Solution

The fourth proportional to 90,207.54, 135,327.92 and 37,621.53 is: 56,439.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,207.54 : 135,327.92 = 37,621.53 : x
  2. Step 2: Convert to fraction form
    90,207.54/135,327.92 = 37,621.53/x
  3. Step 3: Cross multiply
    90,207.54x = 135,327.92 × 37,621.53
  4. Step 4: Simplify right side
    90,207.54x = 5,091,243,214.01
  5. Step 5: Solve for x
    x = 5,091,243,214.01/90,207.54
  6. Step 6: Final answer
    x = 56,439.22

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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.