Home / 79,478.20-109,679.70-43,669

Finding the Fourth Proportional to 79,478.20, 109,679.70 and 43,669

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Solution

The fourth proportional to 79,478.20, 109,679.70 and 43,669 is: 60,263.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,478.20 : 109,679.70 = 43,669 : x
  2. Step 2: Convert to fraction form
    79,478.20/109,679.70 = 43,669/x
  3. Step 3: Cross multiply
    79,478.20x = 109,679.70 × 43,669
  4. Step 4: Simplify right side
    79,478.20x = 4,789,602,819.30
  5. Step 5: Solve for x
    x = 4,789,602,819.30/79,478.20
  6. Step 6: Final answer
    x = 60,263.10

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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.