Home / 81,306.47-122,011.76-43,892.60

Finding the Fourth Proportional to 81,306.47, 122,011.76 and 43,892.60

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Solution

The fourth proportional to 81,306.47, 122,011.76 and 43,892.60 is: 65,867.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,306.47 : 122,011.76 = 43,892.60 : x
  2. Step 2: Convert to fraction form
    81,306.47/122,011.76 = 43,892.60/x
  3. Step 3: Cross multiply
    81,306.47x = 122,011.76 × 43,892.60
  4. Step 4: Simplify right side
    81,306.47x = 5,355,412,876.65
  5. Step 5: Solve for x
    x = 5,355,412,876.65/81,306.47
  6. Step 6: Final answer
    x = 65,867.00

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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.