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Finding the Fourth Proportional to 85,468.59, 128,163.90 and 35,518.94

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Solution

The fourth proportional to 85,468.59, 128,163.90 and 35,518.94 is: 53,262.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,468.59 : 128,163.90 = 35,518.94 : x
  2. Step 2: Convert to fraction form
    85,468.59/128,163.90 = 35,518.94/x
  3. Step 3: Cross multiply
    85,468.59x = 128,163.90 × 35,518.94
  4. Step 4: Simplify right side
    85,468.59x = 4,552,245,233.45
  5. Step 5: Solve for x
    x = 4,552,245,233.45/85,468.59
  6. Step 6: Final answer
    x = 53,262.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.