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Finding the Fourth Proportional to 68,171.78, 94,075.21 and 37,957.12

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Solution

The fourth proportional to 68,171.78, 94,075.21 and 37,957.12 is: 52,379.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,171.78 : 94,075.21 = 37,957.12 : x
  2. Step 2: Convert to fraction form
    68,171.78/94,075.21 = 37,957.12/x
  3. Step 3: Cross multiply
    68,171.78x = 94,075.21 × 37,957.12
  4. Step 4: Simplify right side
    68,171.78x = 3,570,824,035.00
  5. Step 5: Solve for x
    x = 3,570,824,035.00/68,171.78
  6. Step 6: Final answer
    x = 52,379.80

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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.