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Finding the Fourth Proportional to 70,911.39, 97,857.22 and 39,080.31

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Solution

The fourth proportional to 70,911.39, 97,857.22 and 39,080.31 is: 53,930.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,911.39 : 97,857.22 = 39,080.31 : x
  2. Step 2: Convert to fraction form
    70,911.39/97,857.22 = 39,080.31/x
  3. Step 3: Cross multiply
    70,911.39x = 97,857.22 × 39,080.31
  4. Step 4: Simplify right side
    70,911.39x = 3,824,290,493.34
  5. Step 5: Solve for x
    x = 3,824,290,493.34/70,911.39
  6. Step 6: Final answer
    x = 53,930.55

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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.