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Finding the Fourth Proportional to 71,589.59, 98,805.79 and 41,392.42

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Solution

The fourth proportional to 71,589.59, 98,805.79 and 41,392.42 is: 57,128.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,589.59 : 98,805.79 = 41,392.42 : x
  2. Step 2: Convert to fraction form
    71,589.59/98,805.79 = 41,392.42/x
  3. Step 3: Cross multiply
    71,589.59x = 98,805.79 × 41,392.42
  4. Step 4: Simplify right side
    71,589.59x = 4,089,810,562.84
  5. Step 5: Solve for x
    x = 4,089,810,562.84/71,589.59
  6. Step 6: Final answer
    x = 57,128.57

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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.