Home / 74,172.78-102,358.02-40,181.92

Finding the Fourth Proportional to 74,172.78, 102,358.02 and 40,181.92

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Solution

The fourth proportional to 74,172.78, 102,358.02 and 40,181.92 is: 55,450.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,172.78 : 102,358.02 = 40,181.92 : x
  2. Step 2: Convert to fraction form
    74,172.78/102,358.02 = 40,181.92/x
  3. Step 3: Cross multiply
    74,172.78x = 102,358.02 × 40,181.92
  4. Step 4: Simplify right side
    74,172.78x = 4,112,941,959.02
  5. Step 5: Solve for x
    x = 4,112,941,959.02/74,172.78
  6. Step 6: Final answer
    x = 55,450.83

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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.