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Finding the Fourth Proportional to 73,072.34, 100,840.12 and 39,538.34

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Solution

The fourth proportional to 73,072.34, 100,840.12 and 39,538.34 is: 54,563.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,072.34 : 100,840.12 = 39,538.34 : x
  2. Step 2: Convert to fraction form
    73,072.34/100,840.12 = 39,538.34/x
  3. Step 3: Cross multiply
    73,072.34x = 100,840.12 × 39,538.34
  4. Step 4: Simplify right side
    73,072.34x = 3,987,051,514.93
  5. Step 5: Solve for x
    x = 3,987,051,514.93/73,072.34
  6. Step 6: Final answer
    x = 54,563.07

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1.5x scale

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.