Home / 90,818.85-136,229.06-31,654.43

Finding the Fourth Proportional to 90,818.85, 136,229.06 and 31,654.43

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Solution

The fourth proportional to 90,818.85, 136,229.06 and 31,654.43 is: 47,481.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,818.85 : 136,229.06 = 31,654.43 : x
  2. Step 2: Convert to fraction form
    90,818.85/136,229.06 = 31,654.43/x
  3. Step 3: Cross multiply
    90,818.85x = 136,229.06 × 31,654.43
  4. Step 4: Simplify right side
    90,818.85x = 4,312,252,404.32
  5. Step 5: Solve for x
    x = 4,312,252,404.32/90,818.85
  6. Step 6: Final answer
    x = 47,481.91

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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.