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Finding the Fourth Proportional to 69,068.77, 103,603.16 and 21,687.41

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Solution

The fourth proportional to 69,068.77, 103,603.16 and 21,687.41 is: 32,531.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,068.77 : 103,603.16 = 21,687.41 : x
  2. Step 2: Convert to fraction form
    69,068.77/103,603.16 = 21,687.41/x
  3. Step 3: Cross multiply
    69,068.77x = 103,603.16 × 21,687.41
  4. Step 4: Simplify right side
    69,068.77x = 2,246,884,521.44
  5. Step 5: Solve for x
    x = 2,246,884,521.44/69,068.77
  6. Step 6: Final answer
    x = 32,531.12

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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.