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Finding the Fourth Proportional to 85,387.54, 117,841.54 and 49,588.78

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Solution

The fourth proportional to 85,387.54, 117,841.54 and 49,588.78 is: 68,436.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,387.54 : 117,841.54 = 49,588.78 : x
  2. Step 2: Convert to fraction form
    85,387.54/117,841.54 = 49,588.78/x
  3. Step 3: Cross multiply
    85,387.54x = 117,841.54 × 49,588.78
  4. Step 4: Simplify right side
    85,387.54x = 5,843,617,612.71
  5. Step 5: Solve for x
    x = 5,843,617,612.71/85,387.54
  6. Step 6: Final answer
    x = 68,436.42

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1.5x scale

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.