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Finding the Fourth Proportional to 68,607.16, 102,907.62 and 28,609.64

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Solution

The fourth proportional to 68,607.16, 102,907.62 and 28,609.64 is: 42,913.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,607.16 : 102,907.62 = 28,609.64 : x
  2. Step 2: Convert to fraction form
    68,607.16/102,907.62 = 28,609.64/x
  3. Step 3: Cross multiply
    68,607.16x = 102,907.62 × 28,609.64
  4. Step 4: Simplify right side
    68,607.16x = 2,944,149,961.46
  5. Step 5: Solve for x
    x = 2,944,149,961.46/68,607.16
  6. Step 6: Final answer
    x = 42,913.16

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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.