Home / 81,228.82-121,717.56-56,317.54

Finding the Fourth Proportional to 81,228.82, 121,717.56 and 56,317.54

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Solution

The fourth proportional to 81,228.82, 121,717.56 and 56,317.54 is: 84,389.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,228.82 : 121,717.56 = 56,317.54 : x
  2. Step 2: Convert to fraction form
    81,228.82/121,717.56 = 56,317.54/x
  3. Step 3: Cross multiply
    81,228.82x = 121,717.56 × 56,317.54
  4. Step 4: Simplify right side
    81,228.82x = 6,854,833,554.00
  5. Step 5: Solve for x
    x = 6,854,833,554.00/81,228.82
  6. Step 6: Final answer
    x = 84,389.18

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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.