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Finding the Fourth Proportional to 69,575.96, 104,379.86 and 30,139.64

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Solution

The fourth proportional to 69,575.96, 104,379.86 and 30,139.64 is: 45,216.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,575.96 : 104,379.86 = 30,139.64 : x
  2. Step 2: Convert to fraction form
    69,575.96/104,379.86 = 30,139.64/x
  3. Step 3: Cross multiply
    69,575.96x = 104,379.86 × 30,139.64
  4. Step 4: Simplify right side
    69,575.96x = 3,145,971,403.65
  5. Step 5: Solve for x
    x = 3,145,971,403.65/69,575.96
  6. Step 6: Final answer
    x = 45,216.36

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1.5x scale

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.