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Finding the Fourth Proportional to 70,061.79, 105,073.24 and 19,449.19

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Solution

The fourth proportional to 70,061.79, 105,073.24 and 19,449.19 is: 29,168.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,061.79 : 105,073.24 = 19,449.19 : x
  2. Step 2: Convert to fraction form
    70,061.79/105,073.24 = 19,449.19/x
  3. Step 3: Cross multiply
    70,061.79x = 105,073.24 × 19,449.19
  4. Step 4: Simplify right side
    70,061.79x = 2,043,589,408.68
  5. Step 5: Solve for x
    x = 2,043,589,408.68/70,061.79
  6. Step 6: Final answer
    x = 29,168.39

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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.