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Finding the Fourth Proportional to 68,710.32, 103,071.96 and 21,952.08

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Solution

The fourth proportional to 68,710.32, 103,071.96 and 21,952.08 is: 32,930.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,710.32 : 103,071.96 = 21,952.08 : x
  2. Step 2: Convert to fraction form
    68,710.32/103,071.96 = 21,952.08/x
  3. Step 3: Cross multiply
    68,710.32x = 103,071.96 × 21,952.08
  4. Step 4: Simplify right side
    68,710.32x = 2,262,643,911.68
  5. Step 5: Solve for x
    x = 2,262,643,911.68/68,710.32
  6. Step 6: Final answer
    x = 32,930.19

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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.