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Finding the Fourth Proportional to 68,595.20, 102,912.28 and 21,851.68

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Solution

The fourth proportional to 68,595.20, 102,912.28 and 21,851.68 is: 32,783.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,595.20 : 102,912.28 = 21,851.68 : x
  2. Step 2: Convert to fraction form
    68,595.20/102,912.28 = 21,851.68/x
  3. Step 3: Cross multiply
    68,595.20x = 102,912.28 × 21,851.68
  4. Step 4: Simplify right side
    68,595.20x = 2,248,806,210.63
  5. Step 5: Solve for x
    x = 2,248,806,210.63/68,595.20
  6. Step 6: Final answer
    x = 32,783.73

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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.