Home / 90,791.47-136,190.85-31,633.12

Finding the Fourth Proportional to 90,791.47, 136,190.85 and 31,633.12

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Solution

The fourth proportional to 90,791.47, 136,190.85 and 31,633.12 is: 47,450.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,791.47 : 136,190.85 = 31,633.12 : x
  2. Step 2: Convert to fraction form
    90,791.47/136,190.85 = 31,633.12/x
  3. Step 3: Cross multiply
    90,791.47x = 136,190.85 × 31,633.12
  4. Step 4: Simplify right side
    90,791.47x = 4,308,141,500.95
  5. Step 5: Solve for x
    x = 4,308,141,500.95/90,791.47
  6. Step 6: Final answer
    x = 47,450.95

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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.