Home / 69,040.18-103,560.51-21,009.25

Finding the Fourth Proportional to 69,040.18, 103,560.51 and 21,009.25

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Solution

The fourth proportional to 69,040.18, 103,560.51 and 21,009.25 is: 31,513.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,040.18 : 103,560.51 = 21,009.25 : x
  2. Step 2: Convert to fraction form
    69,040.18/103,560.51 = 21,009.25/x
  3. Step 3: Cross multiply
    69,040.18x = 103,560.51 × 21,009.25
  4. Step 4: Simplify right side
    69,040.18x = 2,175,728,644.72
  5. Step 5: Solve for x
    x = 2,175,728,644.72/69,040.18
  6. Step 6: Final answer
    x = 31,513.95

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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.