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Finding the Fourth Proportional to 79,621.88, 109,832.64 and 49,762.04

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Solution

The fourth proportional to 79,621.88, 109,832.64 and 49,762.04 is: 68,643.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,621.88 : 109,832.64 = 49,762.04 : x
  2. Step 2: Convert to fraction form
    79,621.88/109,832.64 = 49,762.04/x
  3. Step 3: Cross multiply
    79,621.88x = 109,832.64 × 49,762.04
  4. Step 4: Simplify right side
    79,621.88x = 5,465,496,224.99
  5. Step 5: Solve for x
    x = 5,465,496,224.99/79,621.88
  6. Step 6: Final answer
    x = 68,643.14

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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.