Home / 90,891.06-136,343.88-31,725.42

Finding the Fourth Proportional to 90,891.06, 136,343.88 and 31,725.42

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Solution

The fourth proportional to 90,891.06, 136,343.88 and 31,725.42 is: 47,590.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,891.06 : 136,343.88 = 31,725.42 : x
  2. Step 2: Convert to fraction form
    90,891.06/136,343.88 = 31,725.42/x
  3. Step 3: Cross multiply
    90,891.06x = 136,343.88 × 31,725.42
  4. Step 4: Simplify right side
    90,891.06x = 4,325,566,857.43
  5. Step 5: Solve for x
    x = 4,325,566,857.43/90,891.06
  6. Step 6: Final answer
    x = 47,590.67

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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.