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Finding the Fourth Proportional to 62,928, 86,840.63 and 34,633.68

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Solution

The fourth proportional to 62,928, 86,840.63 and 34,633.68 is: 47,794.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,928 : 86,840.63 = 34,633.68 : x
  2. Step 2: Convert to fraction form
    62,928/86,840.63 = 34,633.68/x
  3. Step 3: Cross multiply
    62,928x = 86,840.63 × 34,633.68
  4. Step 4: Simplify right side
    62,928x = 3,007,610,417.25
  5. Step 5: Solve for x
    x = 3,007,610,417.25/62,928
  6. Step 6: Final answer
    x = 47,794.47

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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.