Home / 79,406.40-109,604.16-51,121.20

Finding the Fourth Proportional to 79,406.40, 109,604.16 and 51,121.20

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Solution

The fourth proportional to 79,406.40, 109,604.16 and 51,121.20 is: 70,562.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,406.40 : 109,604.16 = 51,121.20 : x
  2. Step 2: Convert to fraction form
    79,406.40/109,604.16 = 51,121.20/x
  3. Step 3: Cross multiply
    79,406.40x = 109,604.16 × 51,121.20
  4. Step 4: Simplify right side
    79,406.40x = 5,603,096,184.19
  5. Step 5: Solve for x
    x = 5,603,096,184.19/79,406.40
  6. Step 6: Final answer
    x = 70,562.27

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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.