Home / 79,239.87-109,351.04-47,408.67

Finding the Fourth Proportional to 79,239.87, 109,351.04 and 47,408.67

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Solution

The fourth proportional to 79,239.87, 109,351.04 and 47,408.67 is: 65,423.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,239.87 : 109,351.04 = 47,408.67 : x
  2. Step 2: Convert to fraction form
    79,239.87/109,351.04 = 47,408.67/x
  3. Step 3: Cross multiply
    79,239.87x = 109,351.04 × 47,408.67
  4. Step 4: Simplify right side
    79,239.87x = 5,184,187,132.47
  5. Step 5: Solve for x
    x = 5,184,187,132.47/79,239.87
  6. Step 6: Final answer
    x = 65,423.97

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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.