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Finding the Fourth Proportional to 69,707.33, 104,560.79 and 19,787.47

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Solution

The fourth proportional to 69,707.33, 104,560.79 and 19,787.47 is: 29,681.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,707.33 : 104,560.79 = 19,787.47 : x
  2. Step 2: Convert to fraction form
    69,707.33/104,560.79 = 19,787.47/x
  3. Step 3: Cross multiply
    69,707.33x = 104,560.79 × 19,787.47
  4. Step 4: Simplify right side
    69,707.33x = 2,068,993,396.36
  5. Step 5: Solve for x
    x = 2,068,993,396.36/69,707.33
  6. Step 6: Final answer
    x = 29,681.15

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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.