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Finding the Fourth Proportional to 79,604.64, 109,779.84 and 49,394.88

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Solution

The fourth proportional to 79,604.64, 109,779.84 and 49,394.88 is: 68,118.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,604.64 : 109,779.84 = 49,394.88 : x
  2. Step 2: Convert to fraction form
    79,604.64/109,779.84 = 49,394.88/x
  3. Step 3: Cross multiply
    79,604.64x = 109,779.84 × 49,394.88
  4. Step 4: Simplify right side
    79,604.64x = 5,422,562,023.22
  5. Step 5: Solve for x
    x = 5,422,562,023.22/79,604.64
  6. Step 6: Final answer
    x = 68,118.67

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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.