Home / 68,531.32-102,795.90-21,783.52

Finding the Fourth Proportional to 68,531.32, 102,795.90 and 21,783.52

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Solution

The fourth proportional to 68,531.32, 102,795.90 and 21,783.52 is: 32,674.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,531.32 : 102,795.90 = 21,783.52 : x
  2. Step 2: Convert to fraction form
    68,531.32/102,795.90 = 21,783.52/x
  3. Step 3: Cross multiply
    68,531.32x = 102,795.90 × 21,783.52
  4. Step 4: Simplify right side
    68,531.32x = 2,239,256,543.57
  5. Step 5: Solve for x
    x = 2,239,256,543.57/68,531.32
  6. Step 6: Final answer
    x = 32,674.94

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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.