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Finding the Fourth Proportional to 68,594.60, 102,906.48 and 21,212.84

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Solution

The fourth proportional to 68,594.60, 102,906.48 and 21,212.84 is: 31,823.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,594.60 : 102,906.48 = 21,212.84 : x
  2. Step 2: Convert to fraction form
    68,594.60/102,906.48 = 21,212.84/x
  3. Step 3: Cross multiply
    68,594.60x = 102,906.48 × 21,212.84
  4. Step 4: Simplify right side
    68,594.60x = 2,182,938,695.20
  5. Step 5: Solve for x
    x = 2,182,938,695.20/68,594.60
  6. Step 6: Final answer
    x = 31,823.77

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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.