Home / 55,231.40-76,221.24-31,357.28

Finding the Fourth Proportional to 55,231.40, 76,221.24 and 31,357.28

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Solution

The fourth proportional to 55,231.40, 76,221.24 and 31,357.28 is: 43,274.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,231.40 : 76,221.24 = 31,357.28 : x
  2. Step 2: Convert to fraction form
    55,231.40/76,221.24 = 31,357.28/x
  3. Step 3: Cross multiply
    55,231.40x = 76,221.24 × 31,357.28
  4. Step 4: Simplify right side
    55,231.40x = 2,390,090,764.63
  5. Step 5: Solve for x
    x = 2,390,090,764.63/55,231.40
  6. Step 6: Final answer
    x = 43,274.13

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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.