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Finding the Fourth Proportional to 68,163.96, 94,035.96 and 39,857.16

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Solution

The fourth proportional to 68,163.96, 94,035.96 and 39,857.16 is: 54,985.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,163.96 : 94,035.96 = 39,857.16 : x
  2. Step 2: Convert to fraction form
    68,163.96/94,035.96 = 39,857.16/x
  3. Step 3: Cross multiply
    68,163.96x = 94,035.96 × 39,857.16
  4. Step 4: Simplify right side
    68,163.96x = 3,748,006,303.47
  5. Step 5: Solve for x
    x = 3,748,006,303.47/68,163.96
  6. Step 6: Final answer
    x = 54,985.16

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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.