Home / 66,721.02-100,109.43-29,261.70

Finding the Fourth Proportional to 66,721.02, 100,109.43 and 29,261.70

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Solution

The fourth proportional to 66,721.02, 100,109.43 and 29,261.70 is: 43,904.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,721.02 : 100,109.43 = 29,261.70 : x
  2. Step 2: Convert to fraction form
    66,721.02/100,109.43 = 29,261.70/x
  3. Step 3: Cross multiply
    66,721.02x = 100,109.43 × 29,261.70
  4. Step 4: Simplify right side
    66,721.02x = 2,929,372,107.83
  5. Step 5: Solve for x
    x = 2,929,372,107.83/66,721.02
  6. Step 6: Final answer
    x = 43,904.79

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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.