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Finding the Fourth Proportional to 70,278.48, 105,388.71 and 26,994.87

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Solution

The fourth proportional to 70,278.48, 105,388.71 and 26,994.87 is: 40,481.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,278.48 : 105,388.71 = 26,994.87 : x
  2. Step 2: Convert to fraction form
    70,278.48/105,388.71 = 26,994.87/x
  3. Step 3: Cross multiply
    70,278.48x = 105,388.71 × 26,994.87
  4. Step 4: Simplify right side
    70,278.48x = 2,844,954,627.15
  5. Step 5: Solve for x
    x = 2,844,954,627.15/70,278.48
  6. Step 6: Final answer
    x = 40,481.17

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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.