Home / 90,940.32-136,391.04-28,596.96

Finding the Fourth Proportional to 90,940.32, 136,391.04 and 28,596.96

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Solution

The fourth proportional to 90,940.32, 136,391.04 and 28,596.96 is: 42,889.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,940.32 : 136,391.04 = 28,596.96 : x
  2. Step 2: Convert to fraction form
    90,940.32/136,391.04 = 28,596.96/x
  3. Step 3: Cross multiply
    90,940.32x = 136,391.04 × 28,596.96
  4. Step 4: Simplify right side
    90,940.32x = 3,900,369,115.24
  5. Step 5: Solve for x
    x = 3,900,369,115.24/90,940.32
  6. Step 6: Final answer
    x = 42,889.33

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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.