Home / 72,821.72-109,275.04-30,699.22

Finding the Fourth Proportional to 72,821.72, 109,275.04 and 30,699.22

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Solution

The fourth proportional to 72,821.72, 109,275.04 and 30,699.22 is: 46,066.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,821.72 : 109,275.04 = 30,699.22 : x
  2. Step 2: Convert to fraction form
    72,821.72/109,275.04 = 30,699.22/x
  3. Step 3: Cross multiply
    72,821.72x = 109,275.04 × 30,699.22
  4. Step 4: Simplify right side
    72,821.72x = 3,354,658,493.47
  5. Step 5: Solve for x
    x = 3,354,658,493.47/72,821.72
  6. Step 6: Final answer
    x = 46,066.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.