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Finding the Fourth Proportional to 70,930.65, 97,884.26 and 39,100.08

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Solution

The fourth proportional to 70,930.65, 97,884.26 and 39,100.08 is: 53,958.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,930.65 : 97,884.26 = 39,100.08 : x
  2. Step 2: Convert to fraction form
    70,930.65/97,884.26 = 39,100.08/x
  3. Step 3: Cross multiply
    70,930.65x = 97,884.26 × 39,100.08
  4. Step 4: Simplify right side
    70,930.65x = 3,827,282,396.74
  5. Step 5: Solve for x
    x = 3,827,282,396.74/70,930.65
  6. Step 6: Final answer
    x = 53,958.09

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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.