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Finding the Fourth Proportional to 90,361.80, 135,551.34 and 37,765.80

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Solution

The fourth proportional to 90,361.80, 135,551.34 and 37,765.80 is: 56,652.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,361.80 : 135,551.34 = 37,765.80 : x
  2. Step 2: Convert to fraction form
    90,361.80/135,551.34 = 37,765.80/x
  3. Step 3: Cross multiply
    90,361.80x = 135,551.34 × 37,765.80
  4. Step 4: Simplify right side
    90,361.80x = 5,119,204,796.17
  5. Step 5: Solve for x
    x = 5,119,204,796.17/90,361.80
  6. Step 6: Final answer
    x = 56,652.31

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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.