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Finding the Fourth Proportional to 62,686.80, 86,508 and 34,392.96

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Solution

The fourth proportional to 62,686.80, 86,508 and 34,392.96 is: 47,462.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,686.80 : 86,508 = 34,392.96 : x
  2. Step 2: Convert to fraction form
    62,686.80/86,508 = 34,392.96/x
  3. Step 3: Cross multiply
    62,686.80x = 86,508 × 34,392.96
  4. Step 4: Simplify right side
    62,686.80x = 2,975,266,183.68
  5. Step 5: Solve for x
    x = 2,975,266,183.68/62,686.80
  6. Step 6: Final answer
    x = 47,462.40

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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.