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Finding the Fourth Proportional to 71,070.60, 98,076.99 and 39,239.22

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Solution

The fourth proportional to 71,070.60, 98,076.99 and 39,239.22 is: 54,149.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,070.60 : 98,076.99 = 39,239.22 : x
  2. Step 2: Convert to fraction form
    71,070.60/98,076.99 = 39,239.22/x
  3. Step 3: Cross multiply
    71,070.60x = 98,076.99 × 39,239.22
  4. Step 4: Simplify right side
    71,070.60x = 3,848,464,587.55
  5. Step 5: Solve for x
    x = 3,848,464,587.55/71,070.60
  6. Step 6: Final answer
    x = 54,149.88

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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.