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Finding the Fourth Proportional to 101,820.48, 140,511.84 and 62,076.48

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Solution

The fourth proportional to 101,820.48, 140,511.84 and 62,076.48 is: 85,665.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,820.48 : 140,511.84 = 62,076.48 : x
  2. Step 2: Convert to fraction form
    101,820.48/140,511.84 = 62,076.48/x
  3. Step 3: Cross multiply
    101,820.48x = 140,511.84 × 62,076.48
  4. Step 4: Simplify right side
    101,820.48x = 8,722,480,425.52
  5. Step 5: Solve for x
    x = 8,722,480,425.52/101,820.48
  6. Step 6: Final answer
    x = 85,665.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.