Home / 74,072.38-102,219.30-40,080.82

Finding the Fourth Proportional to 74,072.38, 102,219.30 and 40,080.82

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Solution

The fourth proportional to 74,072.38, 102,219.30 and 40,080.82 is: 55,311.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,072.38 : 102,219.30 = 40,080.82 : x
  2. Step 2: Convert to fraction form
    74,072.38/102,219.30 = 40,080.82/x
  3. Step 3: Cross multiply
    74,072.38x = 102,219.30 × 40,080.82
  4. Step 4: Simplify right side
    74,072.38x = 4,097,033,363.83
  5. Step 5: Solve for x
    x = 4,097,033,363.83/74,072.38
  6. Step 6: Final answer
    x = 55,311.22

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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.