Home / 68,619.32-102,918.45-18,703.43

Finding the Fourth Proportional to 68,619.32, 102,918.45 and 18,703.43

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Solution

The fourth proportional to 68,619.32, 102,918.45 and 18,703.43 is: 28,052.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,619.32 : 102,918.45 = 18,703.43 : x
  2. Step 2: Convert to fraction form
    68,619.32/102,918.45 = 18,703.43/x
  3. Step 3: Cross multiply
    68,619.32x = 102,918.45 × 18,703.43
  4. Step 4: Simplify right side
    68,619.32x = 1,924,927,510.69
  5. Step 5: Solve for x
    x = 1,924,927,510.69/68,619.32
  6. Step 6: Final answer
    x = 28,052.27

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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.