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Finding the Fourth Proportional to 68,800.76, 103,201.23 and 18,881.54

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Solution

The fourth proportional to 68,800.76, 103,201.23 and 18,881.54 is: 28,322.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,800.76 : 103,201.23 = 18,881.54 : x
  2. Step 2: Convert to fraction form
    68,800.76/103,201.23 = 18,881.54/x
  3. Step 3: Cross multiply
    68,800.76x = 103,201.23 × 18,881.54
  4. Step 4: Simplify right side
    68,800.76x = 1,948,598,152.29
  5. Step 5: Solve for x
    x = 1,948,598,152.29/68,800.76
  6. Step 6: Final answer
    x = 28,322.33

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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.