Home / 68,638.32-102,956.16-18,717.60

Finding the Fourth Proportional to 68,638.32, 102,956.16 and 18,717.60

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Solution

The fourth proportional to 68,638.32, 102,956.16 and 18,717.60 is: 28,076.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,638.32 : 102,956.16 = 18,717.60 : x
  2. Step 2: Convert to fraction form
    68,638.32/102,956.16 = 18,717.60/x
  3. Step 3: Cross multiply
    68,638.32x = 102,956.16 × 18,717.60
  4. Step 4: Simplify right side
    68,638.32x = 1,927,092,220.42
  5. Step 5: Solve for x
    x = 1,927,092,220.42/68,638.32
  6. Step 6: Final answer
    x = 28,076.04

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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.