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Finding the Fourth Proportional to 71,090.43, 98,104 and 39,258.69

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Solution

The fourth proportional to 71,090.43, 98,104 and 39,258.69 is: 54,176.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,090.43 : 98,104 = 39,258.69 : x
  2. Step 2: Convert to fraction form
    71,090.43/98,104 = 39,258.69/x
  3. Step 3: Cross multiply
    71,090.43x = 98,104 × 39,258.69
  4. Step 4: Simplify right side
    71,090.43x = 3,851,434,523.76
  5. Step 5: Solve for x
    x = 3,851,434,523.76/71,090.43
  6. Step 6: Final answer
    x = 54,176.55

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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.