Home / 79,621.87-109,865.63-45,623.81

Finding the Fourth Proportional to 79,621.87, 109,865.63 and 45,623.81

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Solution

The fourth proportional to 79,621.87, 109,865.63 and 45,623.81 is: 62,953.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,621.87 : 109,865.63 = 45,623.81 : x
  2. Step 2: Convert to fraction form
    79,621.87/109,865.63 = 45,623.81/x
  3. Step 3: Cross multiply
    79,621.87x = 109,865.63 × 45,623.81
  4. Step 4: Simplify right side
    79,621.87x = 5,012,488,675.20
  5. Step 5: Solve for x
    x = 5,012,488,675.20/79,621.87
  6. Step 6: Final answer
    x = 62,953.67

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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.