Home / 81,731.85-122,597.53-21,760.32

Finding the Fourth Proportional to 81,731.85, 122,597.53 and 21,760.32

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Solution

The fourth proportional to 81,731.85, 122,597.53 and 21,760.32 is: 32,640.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,731.85 : 122,597.53 = 21,760.32 : x
  2. Step 2: Convert to fraction form
    81,731.85/122,597.53 = 21,760.32/x
  3. Step 3: Cross multiply
    81,731.85x = 122,597.53 × 21,760.32
  4. Step 4: Simplify right side
    81,731.85x = 2,667,761,484.01
  5. Step 5: Solve for x
    x = 2,667,761,484.01/81,731.85
  6. Step 6: Final answer
    x = 32,640.41

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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.