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Finding the Fourth Proportional to 70,666.31, 106,003.11 and 18,076.25

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Solution

The fourth proportional to 70,666.31, 106,003.11 and 18,076.25 is: 27,115.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,666.31 : 106,003.11 = 18,076.25 : x
  2. Step 2: Convert to fraction form
    70,666.31/106,003.11 = 18,076.25/x
  3. Step 3: Cross multiply
    70,666.31x = 106,003.11 × 18,076.25
  4. Step 4: Simplify right side
    70,666.31x = 1,916,138,187.12
  5. Step 5: Solve for x
    x = 1,916,138,187.12/70,666.31
  6. Step 6: Final answer
    x = 27,115.30

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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.