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Finding the Fourth Proportional to 101,850.31, 140,553.48 and 56,528.31

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Solution

The fourth proportional to 101,850.31, 140,553.48 and 56,528.31 is: 78,009.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,850.31 : 140,553.48 = 56,528.31 : x
  2. Step 2: Convert to fraction form
    101,850.31/140,553.48 = 56,528.31/x
  3. Step 3: Cross multiply
    101,850.31x = 140,553.48 × 56,528.31
  4. Step 4: Simplify right side
    101,850.31x = 7,945,251,040.40
  5. Step 5: Solve for x
    x = 7,945,251,040.40/101,850.31
  6. Step 6: Final answer
    x = 78,009.10

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1.5x scale

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.