Home / 90,868.88-136,270.20-31,693.52

Finding the Fourth Proportional to 90,868.88, 136,270.20 and 31,693.52

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Solution

The fourth proportional to 90,868.88, 136,270.20 and 31,693.52 is: 47,528.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,868.88 : 136,270.20 = 31,693.52 : x
  2. Step 2: Convert to fraction form
    90,868.88/136,270.20 = 31,693.52/x
  3. Step 3: Cross multiply
    90,868.88x = 136,270.20 × 31,693.52
  4. Step 4: Simplify right side
    90,868.88x = 4,318,882,309.10
  5. Step 5: Solve for x
    x = 4,318,882,309.10/90,868.88
  6. Step 6: Final answer
    x = 47,528.73

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1.5x scale

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.