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Finding the Fourth Proportional to 71,505.18, 98,672.58 and 39,674.00

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Solution

The fourth proportional to 71,505.18, 98,672.58 and 39,674.00 is: 54,747.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,505.18 : 98,672.58 = 39,674.00 : x
  2. Step 2: Convert to fraction form
    71,505.18/98,672.58 = 39,674.00/x
  3. Step 3: Cross multiply
    71,505.18x = 98,672.58 × 39,674.00
  4. Step 4: Simplify right side
    71,505.18x = 3,914,736,185.60
  5. Step 5: Solve for x
    x = 3,914,736,185.60/71,505.18
  6. Step 6: Final answer
    x = 54,747.59

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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.