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Finding the Fourth Proportional to 73,368.47, 100,858.67 and 63,121.83

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Solution

The fourth proportional to 73,368.47, 100,858.67 and 63,121.83 is: 86,772.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,368.47 : 100,858.67 = 63,121.83 : x
  2. Step 2: Convert to fraction form
    73,368.47/100,858.67 = 63,121.83/x
  3. Step 3: Cross multiply
    73,368.47x = 100,858.67 × 63,121.83
  4. Step 4: Simplify right side
    73,368.47x = 6,366,383,506.16
  5. Step 5: Solve for x
    x = 6,366,383,506.16/73,368.47
  6. Step 6: Final answer
    x = 86,772.75

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.