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Finding the Fourth Proportional to 71,571.12, 98,773.08 and 39,743.52

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Solution

The fourth proportional to 71,571.12, 98,773.08 and 39,743.52 is: 54,848.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,571.12 : 98,773.08 = 39,743.52 : x
  2. Step 2: Convert to fraction form
    71,571.12/98,773.08 = 39,743.52/x
  3. Step 3: Cross multiply
    71,571.12x = 98,773.08 × 39,743.52
  4. Step 4: Simplify right side
    71,571.12x = 3,925,589,880.44
  5. Step 5: Solve for x
    x = 3,925,589,880.44/71,571.12
  6. Step 6: Final answer
    x = 54,848.80

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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.