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Finding the Fourth Proportional to 68,608.50, 102,871.75 and 26,453.63

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Solution

The fourth proportional to 68,608.50, 102,871.75 and 26,453.63 is: 39,664.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,608.50 : 102,871.75 = 26,453.63 : x
  2. Step 2: Convert to fraction form
    68,608.50/102,871.75 = 26,453.63/x
  3. Step 3: Cross multiply
    68,608.50x = 102,871.75 × 26,453.63
  4. Step 4: Simplify right side
    68,608.50x = 2,721,331,211.95
  5. Step 5: Solve for x
    x = 2,721,331,211.95/68,608.50
  6. Step 6: Final answer
    x = 39,664.64

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1.5x scale

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.