Home / 90,823.95-136,236.33-31,659.53

Finding the Fourth Proportional to 90,823.95, 136,236.33 and 31,659.53

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Solution

The fourth proportional to 90,823.95, 136,236.33 and 31,659.53 is: 47,489.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,823.95 : 136,236.33 = 31,659.53 : x
  2. Step 2: Convert to fraction form
    90,823.95/136,236.33 = 31,659.53/x
  3. Step 3: Cross multiply
    90,823.95x = 136,236.33 × 31,659.53
  4. Step 4: Simplify right side
    90,823.95x = 4,313,177,495.54
  5. Step 5: Solve for x
    x = 4,313,177,495.54/90,823.95
  6. Step 6: Final answer
    x = 47,489.43

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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.