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Finding the Fourth Proportional to 68,210.60, 102,308.78 and 18,296.04

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Solution

The fourth proportional to 68,210.60, 102,308.78 and 18,296.04 is: 27,442.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,210.60 : 102,308.78 = 18,296.04 : x
  2. Step 2: Convert to fraction form
    68,210.60/102,308.78 = 18,296.04/x
  3. Step 3: Cross multiply
    68,210.60x = 102,308.78 × 18,296.04
  4. Step 4: Simplify right side
    68,210.60x = 1,871,845,531.23
  5. Step 5: Solve for x
    x = 1,871,845,531.23/68,210.60
  6. Step 6: Final answer
    x = 27,442.15

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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.