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Finding the Fourth Proportional to 73,016.21, 100,762.36 and 39,482.21

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Solution

The fourth proportional to 73,016.21, 100,762.36 and 39,482.21 is: 54,485.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,016.21 : 100,762.36 = 39,482.21 : x
  2. Step 2: Convert to fraction form
    73,016.21/100,762.36 = 39,482.21/x
  3. Step 3: Cross multiply
    73,016.21x = 100,762.36 × 39,482.21
  4. Step 4: Simplify right side
    73,016.21x = 3,978,320,055.10
  5. Step 5: Solve for x
    x = 3,978,320,055.10/73,016.21
  6. Step 6: Final answer
    x = 54,485.44

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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.