Home / 72,992.21-100,729.32-42,771.51

Finding the Fourth Proportional to 72,992.21, 100,729.32 and 42,771.51

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Solution

The fourth proportional to 72,992.21, 100,729.32 and 42,771.51 is: 59,024.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,992.21 : 100,729.32 = 42,771.51 : x
  2. Step 2: Convert to fraction form
    72,992.21/100,729.32 = 42,771.51/x
  3. Step 3: Cross multiply
    72,992.21x = 100,729.32 × 42,771.51
  4. Step 4: Simplify right side
    72,992.21x = 4,308,345,197.87
  5. Step 5: Solve for x
    x = 4,308,345,197.87/72,992.21
  6. Step 6: Final answer
    x = 59,024.73

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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.