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Finding the Fourth Proportional to 68,008.44, 102,012.68 and 21,261.72

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Solution

The fourth proportional to 68,008.44, 102,012.68 and 21,261.72 is: 31,892.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,008.44 : 102,012.68 = 21,261.72 : x
  2. Step 2: Convert to fraction form
    68,008.44/102,012.68 = 21,261.72/x
  3. Step 3: Cross multiply
    68,008.44x = 102,012.68 × 21,261.72
  4. Step 4: Simplify right side
    68,008.44x = 2,168,965,038.61
  5. Step 5: Solve for x
    x = 2,168,965,038.61/68,008.44
  6. Step 6: Final answer
    x = 31,892.59

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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.