Home / 74,728.80-103,122.60-40,736.56

Finding the Fourth Proportional to 74,728.80, 103,122.60 and 40,736.56

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Solution

The fourth proportional to 74,728.80, 103,122.60 and 40,736.56 is: 56,214.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,728.80 : 103,122.60 = 40,736.56 : x
  2. Step 2: Convert to fraction form
    74,728.80/103,122.60 = 40,736.56/x
  3. Step 3: Cross multiply
    74,728.80x = 103,122.60 × 40,736.56
  4. Step 4: Simplify right side
    74,728.80x = 4,200,859,982.26
  5. Step 5: Solve for x
    x = 4,200,859,982.26/74,728.80
  6. Step 6: Final answer
    x = 56,214.74

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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.