Home / 90,765.24-136,166.33-31,605.53

Finding the Fourth Proportional to 90,765.24, 136,166.33 and 31,605.53

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Solution

The fourth proportional to 90,765.24, 136,166.33 and 31,605.53 is: 47,414.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,765.24 : 136,166.33 = 31,605.53 : x
  2. Step 2: Convert to fraction form
    90,765.24/136,166.33 = 31,605.53/x
  3. Step 3: Cross multiply
    90,765.24x = 136,166.33 × 31,605.53
  4. Step 4: Simplify right side
    90,765.24x = 4,303,608,188.95
  5. Step 5: Solve for x
    x = 4,303,608,188.95/90,765.24
  6. Step 6: Final answer
    x = 47,414.72

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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.