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Finding the Fourth Proportional to 70,914.60, 106,363.26 and 18,319.68

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Solution

The fourth proportional to 70,914.60, 106,363.26 and 18,319.68 is: 27,477.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,914.60 : 106,363.26 = 18,319.68 : x
  2. Step 2: Convert to fraction form
    70,914.60/106,363.26 = 18,319.68/x
  3. Step 3: Cross multiply
    70,914.60x = 106,363.26 × 18,319.68
  4. Step 4: Simplify right side
    70,914.60x = 1,948,540,886.96
  5. Step 5: Solve for x
    x = 1,948,540,886.96/70,914.60
  6. Step 6: Final answer
    x = 27,477.29

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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.