Home / 74,113.74-102,276.14-40,121.42

Finding the Fourth Proportional to 74,113.74, 102,276.14 and 40,121.42

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Solution

The fourth proportional to 74,113.74, 102,276.14 and 40,121.42 is: 55,367.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,113.74 : 102,276.14 = 40,121.42 : x
  2. Step 2: Convert to fraction form
    74,113.74/102,276.14 = 40,121.42/x
  3. Step 3: Cross multiply
    74,113.74x = 102,276.14 × 40,121.42
  4. Step 4: Simplify right side
    74,113.74x = 4,103,463,256.93
  5. Step 5: Solve for x
    x = 4,103,463,256.93/74,113.74
  6. Step 6: Final answer
    x = 55,367.11

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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.