Home / 82,329.32-123,493.02-19,999.88

Finding the Fourth Proportional to 82,329.32, 123,493.02 and 19,999.88

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Solution

The fourth proportional to 82,329.32, 123,493.02 and 19,999.88 is: 29,999.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,329.32 : 123,493.02 = 19,999.88 : x
  2. Step 2: Convert to fraction form
    82,329.32/123,493.02 = 19,999.88/x
  3. Step 3: Cross multiply
    82,329.32x = 123,493.02 × 19,999.88
  4. Step 4: Simplify right side
    82,329.32x = 2,469,845,580.84
  5. Step 5: Solve for x
    x = 2,469,845,580.84/82,329.32
  6. Step 6: Final answer
    x = 29,999.59

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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.