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Finding the Fourth Proportional to 68,106.39, 102,128.04 and 37,691.07

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Solution

The fourth proportional to 68,106.39, 102,128.04 and 37,691.07 is: 56,519.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,106.39 : 102,128.04 = 37,691.07 : x
  2. Step 2: Convert to fraction form
    68,106.39/102,128.04 = 37,691.07/x
  3. Step 3: Cross multiply
    68,106.39x = 102,128.04 × 37,691.07
  4. Step 4: Simplify right side
    68,106.39x = 3,849,315,104.60
  5. Step 5: Solve for x
    x = 3,849,315,104.60/68,106.39
  6. Step 6: Final answer
    x = 56,519.15

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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.