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Finding the Fourth Proportional to 43,093.81, 64,640.72 and 13,513.95

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Solution

The fourth proportional to 43,093.81, 64,640.72 and 13,513.95 is: 20,270.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,093.81 : 64,640.72 = 13,513.95 : x
  2. Step 2: Convert to fraction form
    43,093.81/64,640.72 = 13,513.95/x
  3. Step 3: Cross multiply
    43,093.81x = 64,640.72 × 13,513.95
  4. Step 4: Simplify right side
    43,093.81x = 873,551,458.04
  5. Step 5: Solve for x
    x = 873,551,458.04/43,093.81
  6. Step 6: Final answer
    x = 20,270.93

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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.