Home / 72,579.42-100,157.03-40,749.66

Finding the Fourth Proportional to 72,579.42, 100,157.03 and 40,749.66

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Solution

The fourth proportional to 72,579.42, 100,157.03 and 40,749.66 is: 56,233.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,579.42 : 100,157.03 = 40,749.66 : x
  2. Step 2: Convert to fraction form
    72,579.42/100,157.03 = 40,749.66/x
  3. Step 3: Cross multiply
    72,579.42x = 100,157.03 × 40,749.66
  4. Step 4: Simplify right side
    72,579.42x = 4,081,365,396.57
  5. Step 5: Solve for x
    x = 4,081,365,396.57/72,579.42
  6. Step 6: Final answer
    x = 56,233.09

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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.