Home / 72,911.24-100,617.18-40,645.43

Finding the Fourth Proportional to 72,911.24, 100,617.18 and 40,645.43

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Solution

The fourth proportional to 72,911.24, 100,617.18 and 40,645.43 is: 56,090.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,911.24 : 100,617.18 = 40,645.43 : x
  2. Step 2: Convert to fraction form
    72,911.24/100,617.18 = 40,645.43/x
  3. Step 3: Cross multiply
    72,911.24x = 100,617.18 × 40,645.43
  4. Step 4: Simplify right side
    72,911.24x = 4,089,628,546.49
  5. Step 5: Solve for x
    x = 4,089,628,546.49/72,911.24
  6. Step 6: Final answer
    x = 56,090.51

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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.