Home / 90,782.78-136,186.92-31,609.85

Finding the Fourth Proportional to 90,782.78, 136,186.92 and 31,609.85

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Solution

The fourth proportional to 90,782.78, 136,186.92 and 31,609.85 is: 47,419.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,782.78 : 136,186.92 = 31,609.85 : x
  2. Step 2: Convert to fraction form
    90,782.78/136,186.92 = 31,609.85/x
  3. Step 3: Cross multiply
    90,782.78x = 136,186.92 × 31,609.85
  4. Step 4: Simplify right side
    90,782.78x = 4,304,847,432.23
  5. Step 5: Solve for x
    x = 4,304,847,432.23/90,782.78
  6. Step 6: Final answer
    x = 47,419.21

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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.