Home / 90,354.61-135,553.38-31,190.77

Finding the Fourth Proportional to 90,354.61, 135,553.38 and 31,190.77

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Solution

The fourth proportional to 90,354.61, 135,553.38 and 31,190.77 is: 46,793.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,354.61 : 135,553.38 = 31,190.77 : x
  2. Step 2: Convert to fraction form
    90,354.61/135,553.38 = 31,190.77/x
  3. Step 3: Cross multiply
    90,354.61x = 135,553.38 × 31,190.77
  4. Step 4: Simplify right side
    90,354.61x = 4,228,014,298.30
  5. Step 5: Solve for x
    x = 4,228,014,298.30/90,354.61
  6. Step 6: Final answer
    x = 46,793.56

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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.