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Finding the Fourth Proportional to 74,384.22, 111,576.26 and 18,980.22

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Solution

The fourth proportional to 74,384.22, 111,576.26 and 18,980.22 is: 28,470.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,384.22 : 111,576.26 = 18,980.22 : x
  2. Step 2: Convert to fraction form
    74,384.22/111,576.26 = 18,980.22/x
  3. Step 3: Cross multiply
    74,384.22x = 111,576.26 × 18,980.22
  4. Step 4: Simplify right side
    74,384.22x = 2,117,741,961.58
  5. Step 5: Solve for x
    x = 2,117,741,961.58/74,384.22
  6. Step 6: Final answer
    x = 28,470.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.