Home / 81,705.24-122,569.38-29,099.16

Finding the Fourth Proportional to 81,705.24, 122,569.38 and 29,099.16

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Solution

The fourth proportional to 81,705.24, 122,569.38 and 29,099.16 is: 43,652.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,705.24 : 122,569.38 = 29,099.16 : x
  2. Step 2: Convert to fraction form
    81,705.24/122,569.38 = 29,099.16/x
  3. Step 3: Cross multiply
    81,705.24x = 122,569.38 × 29,099.16
  4. Step 4: Simplify right side
    81,705.24x = 3,566,665,999.72
  5. Step 5: Solve for x
    x = 3,566,665,999.72/81,705.24
  6. Step 6: Final answer
    x = 43,652.84

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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.