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Finding the Fourth Proportional to 69,855.16, 104,788.96 and 19,934.32

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Solution

The fourth proportional to 69,855.16, 104,788.96 and 19,934.32 is: 29,903.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,855.16 : 104,788.96 = 19,934.32 : x
  2. Step 2: Convert to fraction form
    69,855.16/104,788.96 = 19,934.32/x
  3. Step 3: Cross multiply
    69,855.16x = 104,788.96 × 19,934.32
  4. Step 4: Simplify right side
    69,855.16x = 2,088,896,661.11
  5. Step 5: Solve for x
    x = 2,088,896,661.11/69,855.16
  6. Step 6: Final answer
    x = 29,903.25

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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.