Home / 55,003.80-75,906.45-31,130.49

Finding the Fourth Proportional to 55,003.80, 75,906.45 and 31,130.49

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Solution

The fourth proportional to 55,003.80, 75,906.45 and 31,130.49 is: 42,960.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,003.80 : 75,906.45 = 31,130.49 : x
  2. Step 2: Convert to fraction form
    55,003.80/75,906.45 = 31,130.49/x
  3. Step 3: Cross multiply
    55,003.80x = 75,906.45 × 31,130.49
  4. Step 4: Simplify right side
    55,003.80x = 2,363,004,982.66
  5. Step 5: Solve for x
    x = 2,363,004,982.66/55,003.80
  6. Step 6: Final answer
    x = 42,960.76

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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.