Home / 55,239.90-76,231.59-31,367.10

Finding the Fourth Proportional to 55,239.90, 76,231.59 and 31,367.10

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Solution

The fourth proportional to 55,239.90, 76,231.59 and 31,367.10 is: 43,286.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,239.90 : 76,231.59 = 31,367.10 : x
  2. Step 2: Convert to fraction form
    55,239.90/76,231.59 = 31,367.10/x
  3. Step 3: Cross multiply
    55,239.90x = 76,231.59 × 31,367.10
  4. Step 4: Simplify right side
    55,239.90x = 2,391,163,906.69
  5. Step 5: Solve for x
    x = 2,391,163,906.69/55,239.90
  6. Step 6: Final answer
    x = 43,286.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.