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Finding the Fourth Proportional to 69,938.89, 104,783.95 and 40,295.47

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Solution

The fourth proportional to 69,938.89, 104,783.95 and 40,295.47 is: 60,371.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,938.89 : 104,783.95 = 40,295.47 : x
  2. Step 2: Convert to fraction form
    69,938.89/104,783.95 = 40,295.47/x
  3. Step 3: Cross multiply
    69,938.89x = 104,783.95 × 40,295.47
  4. Step 4: Simplify right side
    69,938.89x = 4,222,318,513.71
  5. Step 5: Solve for x
    x = 4,222,318,513.71/69,938.89
  6. Step 6: Final answer
    x = 60,371.54

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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.