Home / 79,679.12-109,956.30-43,868.40

Finding the Fourth Proportional to 79,679.12, 109,956.30 and 43,868.40

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Solution

The fourth proportional to 79,679.12, 109,956.30 and 43,868.40 is: 60,537.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,679.12 : 109,956.30 = 43,868.40 : x
  2. Step 2: Convert to fraction form
    79,679.12/109,956.30 = 43,868.40/x
  3. Step 3: Cross multiply
    79,679.12x = 109,956.30 × 43,868.40
  4. Step 4: Simplify right side
    79,679.12x = 4,823,606,950.92
  5. Step 5: Solve for x
    x = 4,823,606,950.92/79,679.12
  6. Step 6: Final answer
    x = 60,537.90

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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.