Home / 79,415.12-109,584.78-47,583.20

Finding the Fourth Proportional to 79,415.12, 109,584.78 and 47,583.20

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Solution

The fourth proportional to 79,415.12, 109,584.78 and 47,583.20 is: 65,659.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,415.12 : 109,584.78 = 47,583.20 : x
  2. Step 2: Convert to fraction form
    79,415.12/109,584.78 = 47,583.20/x
  3. Step 3: Cross multiply
    79,415.12x = 109,584.78 × 47,583.20
  4. Step 4: Simplify right side
    79,415.12x = 5,214,393,955.77
  5. Step 5: Solve for x
    x = 5,214,393,955.77/79,415.12
  6. Step 6: Final answer
    x = 65,659.97

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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.