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Finding the Fourth Proportional to 69,314.97, 103,979 and 19,395.07

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Solution

The fourth proportional to 69,314.97, 103,979 and 19,395.07 is: 29,094.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,314.97 : 103,979 = 19,395.07 : x
  2. Step 2: Convert to fraction form
    69,314.97/103,979 = 19,395.07/x
  3. Step 3: Cross multiply
    69,314.97x = 103,979 × 19,395.07
  4. Step 4: Simplify right side
    69,314.97x = 2,016,679,983.53
  5. Step 5: Solve for x
    x = 2,016,679,983.53/69,314.97
  6. Step 6: Final answer
    x = 29,094.44

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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.