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Finding the Fourth Proportional to 89,813.49, 123,940.98 and 49,530.98

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Solution

The fourth proportional to 89,813.49, 123,940.98 and 49,530.98 is: 68,351.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,813.49 : 123,940.98 = 49,530.98 : x
  2. Step 2: Convert to fraction form
    89,813.49/123,940.98 = 49,530.98/x
  3. Step 3: Cross multiply
    89,813.49x = 123,940.98 × 49,530.98
  4. Step 4: Simplify right side
    89,813.49x = 6,138,917,581.86
  5. Step 5: Solve for x
    x = 6,138,917,581.86/89,813.49
  6. Step 6: Final answer
    x = 68,351.84

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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.