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Finding the Fourth Proportional to 71,132.78, 98,163.04 and 39,301.45

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Solution

The fourth proportional to 71,132.78, 98,163.04 and 39,301.45 is: 54,235.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,132.78 : 98,163.04 = 39,301.45 : x
  2. Step 2: Convert to fraction form
    71,132.78/98,163.04 = 39,301.45/x
  3. Step 3: Cross multiply
    71,132.78x = 98,163.04 × 39,301.45
  4. Step 4: Simplify right side
    71,132.78x = 3,857,950,090.60
  5. Step 5: Solve for x
    x = 3,857,950,090.60/71,132.78
  6. Step 6: Final answer
    x = 54,235.89

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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.