Home / 73,020.72-109,531.30-20,430.66

Finding the Fourth Proportional to 73,020.72, 109,531.30 and 20,430.66

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Solution

The fourth proportional to 73,020.72, 109,531.30 and 20,430.66 is: 30,646.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,020.72 : 109,531.30 = 20,430.66 : x
  2. Step 2: Convert to fraction form
    73,020.72/109,531.30 = 20,430.66/x
  3. Step 3: Cross multiply
    73,020.72x = 109,531.30 × 20,430.66
  4. Step 4: Simplify right side
    73,020.72x = 2,237,796,749.66
  5. Step 5: Solve for x
    x = 2,237,796,749.66/73,020.72
  6. Step 6: Final answer
    x = 30,646.05

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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.