Home / 90,727.85-136,106.36-31,580.43

Finding the Fourth Proportional to 90,727.85, 136,106.36 and 31,580.43

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Solution

The fourth proportional to 90,727.85, 136,106.36 and 31,580.43 is: 47,375.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,727.85 : 136,106.36 = 31,580.43 : x
  2. Step 2: Convert to fraction form
    90,727.85/136,106.36 = 31,580.43/x
  3. Step 3: Cross multiply
    90,727.85x = 136,106.36 × 31,580.43
  4. Step 4: Simplify right side
    90,727.85x = 4,298,297,216.63
  5. Step 5: Solve for x
    x = 4,298,297,216.63/90,727.85
  6. Step 6: Final answer
    x = 47,375.72

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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.