Home / 305,761.05-458,664.13-81,116.51

Finding the Fourth Proportional to 305,761.05, 458,664.13 and 81,116.51

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Solution

The fourth proportional to 305,761.05, 458,664.13 and 81,116.51 is: 121,680.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,761.05 : 458,664.13 = 81,116.51 : x
  2. Step 2: Convert to fraction form
    305,761.05/458,664.13 = 81,116.51/x
  3. Step 3: Cross multiply
    305,761.05x = 458,664.13 × 81,116.51
  4. Step 4: Simplify right side
    305,761.05x = 37,205,235,279.91
  5. Step 5: Solve for x
    x = 37,205,235,279.91/305,761.05
  6. Step 6: Final answer
    x = 121,680.75

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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.