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Finding the Fourth Proportional to 70,137.45, 96,790.29 and 39,924.71

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Solution

The fourth proportional to 70,137.45, 96,790.29 and 39,924.71 is: 55,096.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,137.45 : 96,790.29 = 39,924.71 : x
  2. Step 2: Convert to fraction form
    70,137.45/96,790.29 = 39,924.71/x
  3. Step 3: Cross multiply
    70,137.45x = 96,790.29 × 39,924.71
  4. Step 4: Simplify right side
    70,137.45x = 3,864,324,259.07
  5. Step 5: Solve for x
    x = 3,864,324,259.07/70,137.45
  6. Step 6: Final answer
    x = 55,096.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.