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Finding the Fourth Proportional to 62,820.78, 86,697.63 and 35,971.74

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Solution

The fourth proportional to 62,820.78, 86,697.63 and 35,971.74 is: 49,643.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,820.78 : 86,697.63 = 35,971.74 : x
  2. Step 2: Convert to fraction form
    62,820.78/86,697.63 = 35,971.74/x
  3. Step 3: Cross multiply
    62,820.78x = 86,697.63 × 35,971.74
  4. Step 4: Simplify right side
    62,820.78x = 3,118,664,604.98
  5. Step 5: Solve for x
    x = 3,118,664,604.98/62,820.78
  6. Step 6: Final answer
    x = 49,643.84

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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.