Home / 90,850.85-136,298.95-31,687.37

Finding the Fourth Proportional to 90,850.85, 136,298.95 and 31,687.37

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Solution

The fourth proportional to 90,850.85, 136,298.95 and 31,687.37 is: 47,538.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,850.85 : 136,298.95 = 31,687.37 : x
  2. Step 2: Convert to fraction form
    90,850.85/136,298.95 = 31,687.37/x
  3. Step 3: Cross multiply
    90,850.85x = 136,298.95 × 31,687.37
  4. Step 4: Simplify right side
    90,850.85x = 4,318,954,419.33
  5. Step 5: Solve for x
    x = 4,318,954,419.33/90,850.85
  6. Step 6: Final answer
    x = 47,538.96

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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.