Home / 74,262.36-102,477.78-40,728.36

Finding the Fourth Proportional to 74,262.36, 102,477.78 and 40,728.36

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Solution

The fourth proportional to 74,262.36, 102,477.78 and 40,728.36 is: 56,202.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,262.36 : 102,477.78 = 40,728.36 : x
  2. Step 2: Convert to fraction form
    74,262.36/102,477.78 = 40,728.36/x
  3. Step 3: Cross multiply
    74,262.36x = 102,477.78 × 40,728.36
  4. Step 4: Simplify right side
    74,262.36x = 4,173,751,915.84
  5. Step 5: Solve for x
    x = 4,173,751,915.84/74,262.36
  6. Step 6: Final answer
    x = 56,202.79

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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.