Home / 81,728.48-122,592.54-21,756.97

Finding the Fourth Proportional to 81,728.48, 122,592.54 and 21,756.97

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Solution

The fourth proportional to 81,728.48, 122,592.54 and 21,756.97 is: 32,635.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,728.48 : 122,592.54 = 21,756.97 : x
  2. Step 2: Convert to fraction form
    81,728.48/122,592.54 = 21,756.97/x
  3. Step 3: Cross multiply
    81,728.48x = 122,592.54 × 21,756.97
  4. Step 4: Simplify right side
    81,728.48x = 2,667,242,449.83
  5. Step 5: Solve for x
    x = 2,667,242,449.83/81,728.48
  6. Step 6: Final answer
    x = 32,635.41

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1.5x scale

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.