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Finding the Fourth Proportional to 71,988.72, 99,277.44 and 47,747.04

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Solution

The fourth proportional to 71,988.72, 99,277.44 and 47,747.04 is: 65,846.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,988.72 : 99,277.44 = 47,747.04 : x
  2. Step 2: Convert to fraction form
    71,988.72/99,277.44 = 47,747.04/x
  3. Step 3: Cross multiply
    71,988.72x = 99,277.44 × 47,747.04
  4. Step 4: Simplify right side
    71,988.72x = 4,740,203,898.78
  5. Step 5: Solve for x
    x = 4,740,203,898.78/71,988.72
  6. Step 6: Final answer
    x = 65,846.48

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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.