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Finding the Fourth Proportional to 62,850.79, 86,709.36 and 35,978.82

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Solution

The fourth proportional to 62,850.79, 86,709.36 and 35,978.82 is: 49,636.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,850.79 : 86,709.36 = 35,978.82 : x
  2. Step 2: Convert to fraction form
    62,850.79/86,709.36 = 35,978.82/x
  3. Step 3: Cross multiply
    62,850.79x = 86,709.36 × 35,978.82
  4. Step 4: Simplify right side
    62,850.79x = 3,119,700,455.76
  5. Step 5: Solve for x
    x = 3,119,700,455.76/62,850.79
  6. Step 6: Final answer
    x = 49,636.61

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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.