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Finding the Fourth Proportional to 101,979, 140,731.02 and 57,267

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Solution

The fourth proportional to 101,979, 140,731.02 and 57,267 is: 79,028.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,979 : 140,731.02 = 57,267 : x
  2. Step 2: Convert to fraction form
    101,979/140,731.02 = 57,267/x
  3. Step 3: Cross multiply
    101,979x = 140,731.02 × 57,267
  4. Step 4: Simplify right side
    101,979x = 8,059,243,322.34
  5. Step 5: Solve for x
    x = 8,059,243,322.34/101,979
  6. Step 6: Final answer
    x = 79,028.46

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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.