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Finding the Fourth Proportional to 71,209.70, 98,265.26 and 39,376.52

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Solution

The fourth proportional to 71,209.70, 98,265.26 and 39,376.52 is: 54,337.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,209.70 : 98,265.26 = 39,376.52 : x
  2. Step 2: Convert to fraction form
    71,209.70/98,265.26 = 39,376.52/x
  3. Step 3: Cross multiply
    71,209.70x = 98,265.26 × 39,376.52
  4. Step 4: Simplify right side
    71,209.70x = 3,869,343,975.70
  5. Step 5: Solve for x
    x = 3,869,343,975.70/71,209.70
  6. Step 6: Final answer
    x = 54,337.32

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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.