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Finding the Fourth Proportional to 69,843.57, 104,768.82 and 19,931.03

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Solution

The fourth proportional to 69,843.57, 104,768.82 and 19,931.03 is: 29,897.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,843.57 : 104,768.82 = 19,931.03 : x
  2. Step 2: Convert to fraction form
    69,843.57/104,768.82 = 19,931.03/x
  3. Step 3: Cross multiply
    69,843.57x = 104,768.82 × 19,931.03
  4. Step 4: Simplify right side
    69,843.57x = 2,088,149,870.99
  5. Step 5: Solve for x
    x = 2,088,149,870.99/69,843.57
  6. Step 6: Final answer
    x = 29,897.52

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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.