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Finding the Fourth Proportional to 71,285.27, 98,372.48 and 39,453.48

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Solution

The fourth proportional to 71,285.27, 98,372.48 and 39,453.48 is: 54,445.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,285.27 : 98,372.48 = 39,453.48 : x
  2. Step 2: Convert to fraction form
    71,285.27/98,372.48 = 39,453.48/x
  3. Step 3: Cross multiply
    71,285.27x = 98,372.48 × 39,453.48
  4. Step 4: Simplify right side
    71,285.27x = 3,881,136,474.96
  5. Step 5: Solve for x
    x = 3,881,136,474.96/71,285.27
  6. Step 6: Final answer
    x = 54,445.14

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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.