Home / 74,391.13-102,659.43-40,399.35

Finding the Fourth Proportional to 74,391.13, 102,659.43 and 40,399.35

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Solution

The fourth proportional to 74,391.13, 102,659.43 and 40,399.35 is: 55,750.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,391.13 : 102,659.43 = 40,399.35 : x
  2. Step 2: Convert to fraction form
    74,391.13/102,659.43 = 40,399.35/x
  3. Step 3: Cross multiply
    74,391.13x = 102,659.43 × 40,399.35
  4. Step 4: Simplify right side
    74,391.13x = 4,147,374,243.37
  5. Step 5: Solve for x
    x = 4,147,374,243.37/74,391.13
  6. Step 6: Final answer
    x = 55,750.92

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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.