Home / 81,228.56-121,862.28-41,147.60

Finding the Fourth Proportional to 81,228.56, 121,862.28 and 41,147.60

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Solution

The fourth proportional to 81,228.56, 121,862.28 and 41,147.60 is: 61,731.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,228.56 : 121,862.28 = 41,147.60 : x
  2. Step 2: Convert to fraction form
    81,228.56/121,862.28 = 41,147.60/x
  3. Step 3: Cross multiply
    81,228.56x = 121,862.28 × 41,147.60
  4. Step 4: Simplify right side
    81,228.56x = 5,014,339,537.48
  5. Step 5: Solve for x
    x = 5,014,339,537.48/81,228.56
  6. Step 6: Final answer
    x = 61,731.24

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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.