Home / 74,112.31-102,274.96-40,120.77

Finding the Fourth Proportional to 74,112.31, 102,274.96 and 40,120.77

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Solution

The fourth proportional to 74,112.31, 102,274.96 and 40,120.77 is: 55,366.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,112.31 : 102,274.96 = 40,120.77 : x
  2. Step 2: Convert to fraction form
    74,112.31/102,274.96 = 40,120.77/x
  3. Step 3: Cross multiply
    74,112.31x = 102,274.96 × 40,120.77
  4. Step 4: Simplify right side
    74,112.31x = 4,103,349,891.23
  5. Step 5: Solve for x
    x = 4,103,349,891.23/74,112.31
  6. Step 6: Final answer
    x = 55,366.65

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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.