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Finding the Fourth Proportional to 71,070.82, 98,077.10 and 39,239.03

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Solution

The fourth proportional to 71,070.82, 98,077.10 and 39,239.03 is: 54,149.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,070.82 : 98,077.10 = 39,239.03 : x
  2. Step 2: Convert to fraction form
    71,070.82/98,077.10 = 39,239.03/x
  3. Step 3: Cross multiply
    71,070.82x = 98,077.10 × 39,239.03
  4. Step 4: Simplify right side
    71,070.82x = 3,848,450,318.21
  5. Step 5: Solve for x
    x = 3,848,450,318.21/71,070.82
  6. Step 6: Final answer
    x = 54,149.52

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1.5x scale

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.