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Finding the Fourth Proportional to 79,450.76, 109,662.86 and 49,218.93

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Solution

The fourth proportional to 79,450.76, 109,662.86 and 49,218.93 is: 67,935.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,450.76 : 109,662.86 = 49,218.93 : x
  2. Step 2: Convert to fraction form
    79,450.76/109,662.86 = 49,218.93/x
  3. Step 3: Cross multiply
    79,450.76x = 109,662.86 × 49,218.93
  4. Step 4: Simplify right side
    79,450.76x = 5,397,488,752.99
  5. Step 5: Solve for x
    x = 5,397,488,752.99/79,450.76
  6. Step 6: Final answer
    x = 67,935.02

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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.