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Finding the Fourth Proportional to 71,257.98, 98,334.47 and 38,992.46

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Solution

The fourth proportional to 71,257.98, 98,334.47 and 38,992.46 is: 53,808.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,257.98 : 98,334.47 = 38,992.46 : x
  2. Step 2: Convert to fraction form
    71,257.98/98,334.47 = 38,992.46/x
  3. Step 3: Cross multiply
    71,257.98x = 98,334.47 × 38,992.46
  4. Step 4: Simplify right side
    71,257.98x = 3,834,302,493.90
  5. Step 5: Solve for x
    x = 3,834,302,493.90/71,257.98
  6. Step 6: Final answer
    x = 53,808.75

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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.