Home / 90,694.08-136,042.34-31,530.87

Finding the Fourth Proportional to 90,694.08, 136,042.34 and 31,530.87

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Solution

The fourth proportional to 90,694.08, 136,042.34 and 31,530.87 is: 47,296.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,694.08 : 136,042.34 = 31,530.87 : x
  2. Step 2: Convert to fraction form
    90,694.08/136,042.34 = 31,530.87/x
  3. Step 3: Cross multiply
    90,694.08x = 136,042.34 × 31,530.87
  4. Step 4: Simplify right side
    90,694.08x = 4,289,533,179.38
  5. Step 5: Solve for x
    x = 4,289,533,179.38/90,694.08
  6. Step 6: Final answer
    x = 47,296.73

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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.