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Finding the Fourth Proportional to 90,693.92, 136,095.56 and 31,571.11

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Solution

The fourth proportional to 90,693.92, 136,095.56 and 31,571.11 is: 47,375.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,693.92 : 136,095.56 = 31,571.11 : x
  2. Step 2: Convert to fraction form
    90,693.92/136,095.56 = 31,571.11/x
  3. Step 3: Cross multiply
    90,693.92x = 136,095.56 × 31,571.11
  4. Step 4: Simplify right side
    90,693.92x = 4,296,687,896.94
  5. Step 5: Solve for x
    x = 4,296,687,896.94/90,693.92
  6. Step 6: Final answer
    x = 47,375.70

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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.