Home / 90,672.12-135,869.61-38,052.90

Finding the Fourth Proportional to 90,672.12, 135,869.61 and 38,052.90

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Solution

The fourth proportional to 90,672.12, 135,869.61 and 38,052.90 is: 57,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,672.12 : 135,869.61 = 38,052.90 : x
  2. Step 2: Convert to fraction form
    90,672.12/135,869.61 = 38,052.90/x
  3. Step 3: Cross multiply
    90,672.12x = 135,869.61 × 38,052.90
  4. Step 4: Simplify right side
    90,672.12x = 5,170,232,682.37
  5. Step 5: Solve for x
    x = 5,170,232,682.37/90,672.12
  6. Step 6: Final answer
    x = 57,021.20

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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.