Home / 81,058.96-121,631.24-57,518.61

Finding the Fourth Proportional to 81,058.96, 121,631.24 and 57,518.61

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Solution

The fourth proportional to 81,058.96, 121,631.24 and 57,518.61 is: 86,308.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,058.96 : 121,631.24 = 57,518.61 : x
  2. Step 2: Convert to fraction form
    81,058.96/121,631.24 = 57,518.61/x
  3. Step 3: Cross multiply
    81,058.96x = 121,631.24 × 57,518.61
  4. Step 4: Simplify right side
    81,058.96x = 6,996,059,857.38
  5. Step 5: Solve for x
    x = 6,996,059,857.38/81,058.96
  6. Step 6: Final answer
    x = 86,308.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.