Home / 90,724.57-136,039.92-40,761.94

Finding the Fourth Proportional to 90,724.57, 136,039.92 and 40,761.94

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Solution

The fourth proportional to 90,724.57, 136,039.92 and 40,761.94 is: 61,121.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,724.57 : 136,039.92 = 40,761.94 : x
  2. Step 2: Convert to fraction form
    90,724.57/136,039.92 = 40,761.94/x
  3. Step 3: Cross multiply
    90,724.57x = 136,039.92 × 40,761.94
  4. Step 4: Simplify right side
    90,724.57x = 5,545,251,056.64
  5. Step 5: Solve for x
    x = 5,545,251,056.64/90,724.57
  6. Step 6: Final answer
    x = 61,121.82

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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.