Home / 81,122.43-121,387.61-47,858.43

Finding the Fourth Proportional to 81,122.43, 121,387.61 and 47,858.43

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Solution

The fourth proportional to 81,122.43, 121,387.61 and 47,858.43 is: 71,613.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,122.43 : 121,387.61 = 47,858.43 : x
  2. Step 2: Convert to fraction form
    81,122.43/121,387.61 = 47,858.43/x
  3. Step 3: Cross multiply
    81,122.43x = 121,387.61 × 47,858.43
  4. Step 4: Simplify right side
    81,122.43x = 5,809,420,196.76
  5. Step 5: Solve for x
    x = 5,809,420,196.76/81,122.43
  6. Step 6: Final answer
    x = 71,613.00

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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.