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Finding the Fourth Proportional to 85,794.59, 118,356.49 and 53,981.03

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Solution

The fourth proportional to 85,794.59, 118,356.49 and 53,981.03 is: 74,468.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,794.59 : 118,356.49 = 53,981.03 : x
  2. Step 2: Convert to fraction form
    85,794.59/118,356.49 = 53,981.03/x
  3. Step 3: Cross multiply
    85,794.59x = 118,356.49 × 53,981.03
  4. Step 4: Simplify right side
    85,794.59x = 6,389,005,600.75
  5. Step 5: Solve for x
    x = 6,389,005,600.75/85,794.59
  6. Step 6: Final answer
    x = 74,468.63

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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.