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Finding the Fourth Proportional to 71,119.97, 98,148.37 and 40,905.25

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Solution

The fourth proportional to 71,119.97, 98,148.37 and 40,905.25 is: 56,450.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,119.97 : 98,148.37 = 40,905.25 : x
  2. Step 2: Convert to fraction form
    71,119.97/98,148.37 = 40,905.25/x
  3. Step 3: Cross multiply
    71,119.97x = 98,148.37 × 40,905.25
  4. Step 4: Simplify right side
    71,119.97x = 4,014,783,611.94
  5. Step 5: Solve for x
    x = 4,014,783,611.94/71,119.97
  6. Step 6: Final answer
    x = 56,450.86

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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.