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Finding the Fourth Proportional to 68,613.32, 102,919.98 and 19,365.32

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Solution

The fourth proportional to 68,613.32, 102,919.98 and 19,365.32 is: 29,047.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,613.32 : 102,919.98 = 19,365.32 : x
  2. Step 2: Convert to fraction form
    68,613.32/102,919.98 = 19,365.32/x
  3. Step 3: Cross multiply
    68,613.32x = 102,919.98 × 19,365.32
  4. Step 4: Simplify right side
    68,613.32x = 1,993,078,347.09
  5. Step 5: Solve for x
    x = 1,993,078,347.09/68,613.32
  6. Step 6: Final answer
    x = 29,047.98

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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.