Home / 74,112.86-102,275.62-40,121.18

Finding the Fourth Proportional to 74,112.86, 102,275.62 and 40,121.18

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Solution

The fourth proportional to 74,112.86, 102,275.62 and 40,121.18 is: 55,367.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,112.86 : 102,275.62 = 40,121.18 : x
  2. Step 2: Convert to fraction form
    74,112.86/102,275.62 = 40,121.18/x
  3. Step 3: Cross multiply
    74,112.86x = 102,275.62 × 40,121.18
  4. Step 4: Simplify right side
    74,112.86x = 4,103,418,559.63
  5. Step 5: Solve for x
    x = 4,103,418,559.63/74,112.86
  6. Step 6: Final answer
    x = 55,367.16

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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.