Home / 79,623.84-109,876.88-47,786.40

Finding the Fourth Proportional to 79,623.84, 109,876.88 and 47,786.40

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Solution

The fourth proportional to 79,623.84, 109,876.88 and 47,786.40 is: 65,942.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,623.84 : 109,876.88 = 47,786.40 : x
  2. Step 2: Convert to fraction form
    79,623.84/109,876.88 = 47,786.40/x
  3. Step 3: Cross multiply
    79,623.84x = 109,876.88 × 47,786.40
  4. Step 4: Simplify right side
    79,623.84x = 5,250,620,538.43
  5. Step 5: Solve for x
    x = 5,250,620,538.43/79,623.84
  6. Step 6: Final answer
    x = 65,942.82

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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.