Home / 53,781.99-74,216.27-31,121.37

Finding the Fourth Proportional to 53,781.99, 74,216.27 and 31,121.37

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Solution

The fourth proportional to 53,781.99, 74,216.27 and 31,121.37 is: 42,945.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,781.99 : 74,216.27 = 31,121.37 : x
  2. Step 2: Convert to fraction form
    53,781.99/74,216.27 = 31,121.37/x
  3. Step 3: Cross multiply
    53,781.99x = 74,216.27 × 31,121.37
  4. Step 4: Simplify right side
    53,781.99x = 2,309,711,843.08
  5. Step 5: Solve for x
    x = 2,309,711,843.08/53,781.99
  6. Step 6: Final answer
    x = 42,945.82

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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.