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Finding the Fourth Proportional to 45,395.88, 68,106.12 and 15,815.40

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Solution

The fourth proportional to 45,395.88, 68,106.12 and 15,815.40 is: 23,727.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,395.88 : 68,106.12 = 15,815.40 : x
  2. Step 2: Convert to fraction form
    45,395.88/68,106.12 = 15,815.40/x
  3. Step 3: Cross multiply
    45,395.88x = 68,106.12 × 15,815.40
  4. Step 4: Simplify right side
    45,395.88x = 1,077,125,530.25
  5. Step 5: Solve for x
    x = 1,077,125,530.25/45,395.88
  6. Step 6: Final answer
    x = 23,727.39

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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.