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Finding the Fourth Proportional to 53,554.26, 73,887.99 and 30,890.21

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Solution

The fourth proportional to 53,554.26, 73,887.99 and 30,890.21 is: 42,618.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,554.26 : 73,887.99 = 30,890.21 : x
  2. Step 2: Convert to fraction form
    53,554.26/73,887.99 = 30,890.21/x
  3. Step 3: Cross multiply
    53,554.26x = 73,887.99 × 30,890.21
  4. Step 4: Simplify right side
    53,554.26x = 2,282,415,712.30
  5. Step 5: Solve for x
    x = 2,282,415,712.30/53,554.26
  6. Step 6: Final answer
    x = 42,618.75

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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.