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Finding the Fourth Proportional to 68,678.78, 103,056.45 and 37,088.18

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Solution

The fourth proportional to 68,678.78, 103,056.45 and 37,088.18 is: 55,652.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,678.78 : 103,056.45 = 37,088.18 : x
  2. Step 2: Convert to fraction form
    68,678.78/103,056.45 = 37,088.18/x
  3. Step 3: Cross multiply
    68,678.78x = 103,056.45 × 37,088.18
  4. Step 4: Simplify right side
    68,678.78x = 3,822,175,467.04
  5. Step 5: Solve for x
    x = 3,822,175,467.04/68,678.78
  6. Step 6: Final answer
    x = 55,652.93

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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.