Home / 55,645.49-76,794.53-31,438.05

Finding the Fourth Proportional to 55,645.49, 76,794.53 and 31,438.05

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Solution

The fourth proportional to 55,645.49, 76,794.53 and 31,438.05 is: 43,386.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,645.49 : 76,794.53 = 31,438.05 : x
  2. Step 2: Convert to fraction form
    55,645.49/76,794.53 = 31,438.05/x
  3. Step 3: Cross multiply
    55,645.49x = 76,794.53 × 31,438.05
  4. Step 4: Simplify right side
    55,645.49x = 2,414,270,116.68
  5. Step 5: Solve for x
    x = 2,414,270,116.68/55,645.49
  6. Step 6: Final answer
    x = 43,386.63

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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.