Home / 90,385.59-135,593.77-31,207.42

Finding the Fourth Proportional to 90,385.59, 135,593.77 and 31,207.42

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Solution

The fourth proportional to 90,385.59, 135,593.77 and 31,207.42 is: 46,816.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,385.59 : 135,593.77 = 31,207.42 : x
  2. Step 2: Convert to fraction form
    90,385.59/135,593.77 = 31,207.42/x
  3. Step 3: Cross multiply
    90,385.59x = 135,593.77 × 31,207.42
  4. Step 4: Simplify right side
    90,385.59x = 4,231,531,729.77
  5. Step 5: Solve for x
    x = 4,231,531,729.77/90,385.59
  6. Step 6: Final answer
    x = 46,816.44

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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.