Home / 74,072.47-102,219.26-40,080.21

Finding the Fourth Proportional to 74,072.47, 102,219.26 and 40,080.21

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Solution

The fourth proportional to 74,072.47, 102,219.26 and 40,080.21 is: 55,310.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,072.47 : 102,219.26 = 40,080.21 : x
  2. Step 2: Convert to fraction form
    74,072.47/102,219.26 = 40,080.21/x
  3. Step 3: Cross multiply
    74,072.47x = 102,219.26 × 40,080.21
  4. Step 4: Simplify right side
    74,072.47x = 4,096,969,507.05
  5. Step 5: Solve for x
    x = 4,096,969,507.05/74,072.47
  6. Step 6: Final answer
    x = 55,310.29

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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.