Home / 74,112.90-102,275.84-40,121.39

Finding the Fourth Proportional to 74,112.90, 102,275.84 and 40,121.39

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Solution

The fourth proportional to 74,112.90, 102,275.84 and 40,121.39 is: 55,367.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,112.90 : 102,275.84 = 40,121.39 : x
  2. Step 2: Convert to fraction form
    74,112.90/102,275.84 = 40,121.39/x
  3. Step 3: Cross multiply
    74,112.90x = 102,275.84 × 40,121.39
  4. Step 4: Simplify right side
    74,112.90x = 4,103,448,407.92
  5. Step 5: Solve for x
    x = 4,103,448,407.92/74,112.90
  6. Step 6: Final answer
    x = 55,367.53

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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.