Home / 81,464.31-112,342.01-57,257.46

Finding the Fourth Proportional to 81,464.31, 112,342.01 and 57,257.46

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Solution

The fourth proportional to 81,464.31, 112,342.01 and 57,257.46 is: 78,959.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,464.31 : 112,342.01 = 57,257.46 : x
  2. Step 2: Convert to fraction form
    81,464.31/112,342.01 = 57,257.46/x
  3. Step 3: Cross multiply
    81,464.31x = 112,342.01 × 57,257.46
  4. Step 4: Simplify right side
    81,464.31x = 6,432,417,857.61
  5. Step 5: Solve for x
    x = 6,432,417,857.61/81,464.31
  6. Step 6: Final answer
    x = 78,959.95

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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.