Home / 81,376.66-122,083.62-31,457.17

Finding the Fourth Proportional to 81,376.66, 122,083.62 and 31,457.17

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Solution

The fourth proportional to 81,376.66, 122,083.62 and 31,457.17 is: 47,192.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,376.66 : 122,083.62 = 31,457.17 : x
  2. Step 2: Convert to fraction form
    81,376.66/122,083.62 = 31,457.17/x
  3. Step 3: Cross multiply
    81,376.66x = 122,083.62 × 31,457.17
  4. Step 4: Simplify right side
    81,376.66x = 3,840,405,188.56
  5. Step 5: Solve for x
    x = 3,840,405,188.56/81,376.66
  6. Step 6: Final answer
    x = 47,192.96

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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.