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Finding the Fourth Proportional to 69,173.79, 103,744.08 and 31,710.48

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Solution

The fourth proportional to 69,173.79, 103,744.08 and 31,710.48 is: 47,558.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,173.79 : 103,744.08 = 31,710.48 : x
  2. Step 2: Convert to fraction form
    69,173.79/103,744.08 = 31,710.48/x
  3. Step 3: Cross multiply
    69,173.79x = 103,744.08 × 31,710.48
  4. Step 4: Simplify right side
    69,173.79x = 3,289,774,573.96
  5. Step 5: Solve for x
    x = 3,289,774,573.96/69,173.79
  6. Step 6: Final answer
    x = 47,558.11

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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.