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Finding the Fourth Proportional to 62,318.78, 86,009.80 and 39,634.12

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Solution

The fourth proportional to 62,318.78, 86,009.80 and 39,634.12 is: 54,701.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,318.78 : 86,009.80 = 39,634.12 : x
  2. Step 2: Convert to fraction form
    62,318.78/86,009.80 = 39,634.12/x
  3. Step 3: Cross multiply
    62,318.78x = 86,009.80 × 39,634.12
  4. Step 4: Simplify right side
    62,318.78x = 3,408,922,734.38
  5. Step 5: Solve for x
    x = 3,408,922,734.38/62,318.78
  6. Step 6: Final answer
    x = 54,701.37

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1.5x scale

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.