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Finding the Fourth Proportional to 71,494.08, 98,653.92 and 39,655.04

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Solution

The fourth proportional to 71,494.08, 98,653.92 and 39,655.04 is: 54,719.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,494.08 : 98,653.92 = 39,655.04 : x
  2. Step 2: Convert to fraction form
    71,494.08/98,653.92 = 39,655.04/x
  3. Step 3: Cross multiply
    71,494.08x = 98,653.92 × 39,655.04
  4. Step 4: Simplify right side
    71,494.08x = 3,912,125,143.76
  5. Step 5: Solve for x
    x = 3,912,125,143.76/71,494.08
  6. Step 6: Final answer
    x = 54,719.57

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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.