Home / 81,195.24-121,829.22-51,605.40

Finding the Fourth Proportional to 81,195.24, 121,829.22 and 51,605.40

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Solution

The fourth proportional to 81,195.24, 121,829.22 and 51,605.40 is: 77,431.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,195.24 : 121,829.22 = 51,605.40 : x
  2. Step 2: Convert to fraction form
    81,195.24/121,829.22 = 51,605.40/x
  3. Step 3: Cross multiply
    81,195.24x = 121,829.22 × 51,605.40
  4. Step 4: Simplify right side
    81,195.24x = 6,287,045,629.79
  5. Step 5: Solve for x
    x = 6,287,045,629.79/81,195.24
  6. Step 6: Final answer
    x = 77,431.21

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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.