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Finding the Fourth Proportional to 71,474.79, 98,647.02 and 39,653.94

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Solution

The fourth proportional to 71,474.79, 98,647.02 and 39,653.94 is: 54,728.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,474.79 : 98,647.02 = 39,653.94 : x
  2. Step 2: Convert to fraction form
    71,474.79/98,647.02 = 39,653.94/x
  3. Step 3: Cross multiply
    71,474.79x = 98,647.02 × 39,653.94
  4. Step 4: Simplify right side
    71,474.79x = 3,911,743,012.26
  5. Step 5: Solve for x
    x = 3,911,743,012.26/71,474.79
  6. Step 6: Final answer
    x = 54,728.99

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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.