Home / 57,918-79,926.84-31,422

Finding the Fourth Proportional to 57,918, 79,926.84 and 31,422

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Solution

The fourth proportional to 57,918, 79,926.84 and 31,422 is: 43,362.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,918 : 79,926.84 = 31,422 : x
  2. Step 2: Convert to fraction form
    57,918/79,926.84 = 31,422/x
  3. Step 3: Cross multiply
    57,918x = 79,926.84 × 31,422
  4. Step 4: Simplify right side
    57,918x = 2,511,461,166.48
  5. Step 5: Solve for x
    x = 2,511,461,166.48/57,918
  6. Step 6: Final answer
    x = 43,362.36

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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.