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Finding the Fourth Proportional to 68,448.60, 102,648.60 and 47,388.60

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Solution

The fourth proportional to 68,448.60, 102,648.60 and 47,388.60 is: 71,066.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,448.60 : 102,648.60 = 47,388.60 : x
  2. Step 2: Convert to fraction form
    68,448.60/102,648.60 = 47,388.60/x
  3. Step 3: Cross multiply
    68,448.60x = 102,648.60 × 47,388.60
  4. Step 4: Simplify right side
    68,448.60x = 4,864,373,445.96
  5. Step 5: Solve for x
    x = 4,864,373,445.96/68,448.60
  6. Step 6: Final answer
    x = 71,066.08

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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.