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Finding the Fourth Proportional to 79,908.86, 110,314.13 and 49,703.87

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Solution

The fourth proportional to 79,908.86, 110,314.13 and 49,703.87 is: 68,616.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,908.86 : 110,314.13 = 49,703.87 : x
  2. Step 2: Convert to fraction form
    79,908.86/110,314.13 = 49,703.87/x
  3. Step 3: Cross multiply
    79,908.86x = 110,314.13 × 49,703.87
  4. Step 4: Simplify right side
    79,908.86x = 5,483,039,203.95
  5. Step 5: Solve for x
    x = 5,483,039,203.95/79,908.86
  6. Step 6: Final answer
    x = 68,616.16

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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.