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Finding the Fourth Proportional to 84,076.71, 126,114.85 and 27,921.03

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Solution

The fourth proportional to 84,076.71, 126,114.85 and 27,921.03 is: 41,881.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,076.71 : 126,114.85 = 27,921.03 : x
  2. Step 2: Convert to fraction form
    84,076.71/126,114.85 = 27,921.03/x
  3. Step 3: Cross multiply
    84,076.71x = 126,114.85 × 27,921.03
  4. Step 4: Simplify right side
    84,076.71x = 3,521,256,510.30
  5. Step 5: Solve for x
    x = 3,521,256,510.30/84,076.71
  6. Step 6: Final answer
    x = 41,881.47

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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.