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Finding the Fourth Proportional to 71,447.70, 98,593.02 and 39,615.42

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Solution

The fourth proportional to 71,447.70, 98,593.02 and 39,615.42 is: 54,666.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,447.70 : 98,593.02 = 39,615.42 : x
  2. Step 2: Convert to fraction form
    71,447.70/98,593.02 = 39,615.42/x
  3. Step 3: Cross multiply
    71,447.70x = 98,593.02 × 39,615.42
  4. Step 4: Simplify right side
    71,447.70x = 3,905,803,896.37
  5. Step 5: Solve for x
    x = 3,905,803,896.37/71,447.70
  6. Step 6: Final answer
    x = 54,666.61

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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.