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Finding the Fourth Proportional to 39,464.65, 54,458.36 and 21,555.86

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Solution

The fourth proportional to 39,464.65, 54,458.36 and 21,555.86 is: 29,745.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,464.65 : 54,458.36 = 21,555.86 : x
  2. Step 2: Convert to fraction form
    39,464.65/54,458.36 = 21,555.86/x
  3. Step 3: Cross multiply
    39,464.65x = 54,458.36 × 21,555.86
  4. Step 4: Simplify right side
    39,464.65x = 1,173,896,484.75
  5. Step 5: Solve for x
    x = 1,173,896,484.75/39,464.65
  6. Step 6: Final answer
    x = 29,745.52

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.