Home / 57,078-78,767.64-31,932.36

Finding the Fourth Proportional to 57,078, 78,767.64 and 31,932.36

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Solution

The fourth proportional to 57,078, 78,767.64 and 31,932.36 is: 44,066.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,078 : 78,767.64 = 31,932.36 : x
  2. Step 2: Convert to fraction form
    57,078/78,767.64 = 31,932.36/x
  3. Step 3: Cross multiply
    57,078x = 78,767.64 × 31,932.36
  4. Step 4: Simplify right side
    57,078x = 2,515,236,636.83
  5. Step 5: Solve for x
    x = 2,515,236,636.83/57,078
  6. Step 6: Final answer
    x = 44,066.66

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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.