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Finding the Fourth Proportional to 68,335.66, 102,515.88 and 30,913.36

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Solution

The fourth proportional to 68,335.66, 102,515.88 and 30,913.36 is: 46,375.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,335.66 : 102,515.88 = 30,913.36 : x
  2. Step 2: Convert to fraction form
    68,335.66/102,515.88 = 30,913.36/x
  3. Step 3: Cross multiply
    68,335.66x = 102,515.88 × 30,913.36
  4. Step 4: Simplify right side
    68,335.66x = 3,169,110,304.16
  5. Step 5: Solve for x
    x = 3,169,110,304.16/68,335.66
  6. Step 6: Final answer
    x = 46,375.64

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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.