Home / 69,315.47-103,979.75-19,395.57

Finding the Fourth Proportional to 69,315.47, 103,979.75 and 19,395.57

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Solution

The fourth proportional to 69,315.47, 103,979.75 and 19,395.57 is: 29,095.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,315.47 : 103,979.75 = 19,395.57 : x
  2. Step 2: Convert to fraction form
    69,315.47/103,979.75 = 19,395.57/x
  3. Step 3: Cross multiply
    69,315.47x = 103,979.75 × 19,395.57
  4. Step 4: Simplify right side
    69,315.47x = 2,016,746,422.73
  5. Step 5: Solve for x
    x = 2,016,746,422.73/69,315.47
  6. Step 6: Final answer
    x = 29,095.19

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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.