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Finding the Fourth Proportional to 79,931.92, 110,345.97 and 49,727.05

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Solution

The fourth proportional to 79,931.92, 110,345.97 and 49,727.05 is: 68,648.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,931.92 : 110,345.97 = 49,727.05 : x
  2. Step 2: Convert to fraction form
    79,931.92/110,345.97 = 49,727.05/x
  3. Step 3: Cross multiply
    79,931.92x = 110,345.97 × 49,727.05
  4. Step 4: Simplify right side
    79,931.92x = 5,487,179,567.49
  5. Step 5: Solve for x
    x = 5,487,179,567.49/79,931.92
  6. Step 6: Final answer
    x = 68,648.16

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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.