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Finding the Fourth Proportional to 68,714.93, 103,070.94 and 18,795.03

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Solution

The fourth proportional to 68,714.93, 103,070.94 and 18,795.03 is: 28,192.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,714.93 : 103,070.94 = 18,795.03 : x
  2. Step 2: Convert to fraction form
    68,714.93/103,070.94 = 18,795.03/x
  3. Step 3: Cross multiply
    68,714.93x = 103,070.94 × 18,795.03
  4. Step 4: Simplify right side
    68,714.93x = 1,937,221,315.45
  5. Step 5: Solve for x
    x = 1,937,221,315.45/68,714.93
  6. Step 6: Final answer
    x = 28,192.15

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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.