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Finding the Fourth Proportional to 68,727, 103,094.40 and 21,346.58

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Solution

The fourth proportional to 68,727, 103,094.40 and 21,346.58 is: 32,021.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,727 : 103,094.40 = 21,346.58 : x
  2. Step 2: Convert to fraction form
    68,727/103,094.40 = 21,346.58/x
  3. Step 3: Cross multiply
    68,727x = 103,094.40 × 21,346.58
  4. Step 4: Simplify right side
    68,727x = 2,200,712,857.15
  5. Step 5: Solve for x
    x = 2,200,712,857.15/68,727
  6. Step 6: Final answer
    x = 32,021.08

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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.