Home / 90,589.12-135,849.65-31,410.52

Finding the Fourth Proportional to 90,589.12, 135,849.65 and 31,410.52

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Solution

The fourth proportional to 90,589.12, 135,849.65 and 31,410.52 is: 47,103.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,589.12 : 135,849.65 = 31,410.52 : x
  2. Step 2: Convert to fraction form
    90,589.12/135,849.65 = 31,410.52/x
  3. Step 3: Cross multiply
    90,589.12x = 135,849.65 × 31,410.52
  4. Step 4: Simplify right side
    90,589.12x = 4,267,107,651.64
  5. Step 5: Solve for x
    x = 4,267,107,651.64/90,589.12
  6. Step 6: Final answer
    x = 47,103.98

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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.