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Finding the Fourth Proportional to 71,231.52, 98,296.50 and 39,398.39

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Solution

The fourth proportional to 71,231.52, 98,296.50 and 39,398.39 is: 54,368.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,231.52 : 98,296.50 = 39,398.39 : x
  2. Step 2: Convert to fraction form
    71,231.52/98,296.50 = 39,398.39/x
  3. Step 3: Cross multiply
    71,231.52x = 98,296.50 × 39,398.39
  4. Step 4: Simplify right side
    71,231.52x = 3,872,723,842.64
  5. Step 5: Solve for x
    x = 3,872,723,842.64/71,231.52
  6. Step 6: Final answer
    x = 54,368.12

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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.