Home / 74,725.25-103,118.78-40,734.40

Finding the Fourth Proportional to 74,725.25, 103,118.78 and 40,734.40

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Solution

The fourth proportional to 74,725.25, 103,118.78 and 40,734.40 is: 56,212.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,725.25 : 103,118.78 = 40,734.40 : x
  2. Step 2: Convert to fraction form
    74,725.25/103,118.78 = 40,734.40/x
  3. Step 3: Cross multiply
    74,725.25x = 103,118.78 × 40,734.40
  4. Step 4: Simplify right side
    74,725.25x = 4,200,481,632.03
  5. Step 5: Solve for x
    x = 4,200,481,632.03/74,725.25
  6. Step 6: Final answer
    x = 56,212.35

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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.