Home / 74,391.94-102,653.76-42,128.02

Finding the Fourth Proportional to 74,391.94, 102,653.76 and 42,128.02

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Solution

The fourth proportional to 74,391.94, 102,653.76 and 42,128.02 is: 58,132.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,391.94 : 102,653.76 = 42,128.02 : x
  2. Step 2: Convert to fraction form
    74,391.94/102,653.76 = 42,128.02/x
  3. Step 3: Cross multiply
    74,391.94x = 102,653.76 × 42,128.02
  4. Step 4: Simplify right side
    74,391.94x = 4,324,599,654.36
  5. Step 5: Solve for x
    x = 4,324,599,654.36/74,391.94
  6. Step 6: Final answer
    x = 58,132.64

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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.