Home / 90,655.72-135,933.66-31,486.60

Finding the Fourth Proportional to 90,655.72, 135,933.66 and 31,486.60

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Solution

The fourth proportional to 90,655.72, 135,933.66 and 31,486.60 is: 47,212.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,655.72 : 135,933.66 = 31,486.60 : x
  2. Step 2: Convert to fraction form
    90,655.72/135,933.66 = 31,486.60/x
  3. Step 3: Cross multiply
    90,655.72x = 135,933.66 × 31,486.60
  4. Step 4: Simplify right side
    90,655.72x = 4,280,088,778.96
  5. Step 5: Solve for x
    x = 4,280,088,778.96/90,655.72
  6. Step 6: Final answer
    x = 47,212.56

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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.