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Finding the Fourth Proportional to 71,571.74, 98,772.01 and 39,743.60

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Solution

The fourth proportional to 71,571.74, 98,772.01 and 39,743.60 is: 54,847.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,571.74 : 98,772.01 = 39,743.60 : x
  2. Step 2: Convert to fraction form
    71,571.74/98,772.01 = 39,743.60/x
  3. Step 3: Cross multiply
    71,571.74x = 98,772.01 × 39,743.60
  4. Step 4: Simplify right side
    71,571.74x = 3,925,554,663.42
  5. Step 5: Solve for x
    x = 3,925,554,663.42/71,571.74
  6. Step 6: Final answer
    x = 54,847.83

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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.