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Finding the Fourth Proportional to 79,490.97, 109,651.86 and 49,631.13

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Solution

The fourth proportional to 79,490.97, 109,651.86 and 49,631.13 is: 68,462.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,490.97 : 109,651.86 = 49,631.13 : x
  2. Step 2: Convert to fraction form
    79,490.97/109,651.86 = 49,631.13/x
  3. Step 3: Cross multiply
    79,490.97x = 109,651.86 × 49,631.13
  4. Step 4: Simplify right side
    79,490.97x = 5,442,145,718.40
  5. Step 5: Solve for x
    x = 5,442,145,718.40/79,490.97
  6. Step 6: Final answer
    x = 68,462.44

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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.