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Finding the Fourth Proportional to 69,761.34, 104,642.03 and 20,513.34

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Solution

The fourth proportional to 69,761.34, 104,642.03 and 20,513.34 is: 30,770.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,761.34 : 104,642.03 = 20,513.34 : x
  2. Step 2: Convert to fraction form
    69,761.34/104,642.03 = 20,513.34/x
  3. Step 3: Cross multiply
    69,761.34x = 104,642.03 × 20,513.34
  4. Step 4: Simplify right side
    69,761.34x = 2,146,557,437.11
  5. Step 5: Solve for x
    x = 2,146,557,437.11/69,761.34
  6. Step 6: Final answer
    x = 30,770.01

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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.