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Finding the Fourth Proportional to 66,603.82, 99,903.42 and 16,684.34

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Solution

The fourth proportional to 66,603.82, 99,903.42 and 16,684.34 is: 25,025.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,603.82 : 99,903.42 = 16,684.34 : x
  2. Step 2: Convert to fraction form
    66,603.82/99,903.42 = 16,684.34/x
  3. Step 3: Cross multiply
    66,603.82x = 99,903.42 × 16,684.34
  4. Step 4: Simplify right side
    66,603.82x = 1,666,822,876.20
  5. Step 5: Solve for x
    x = 1,666,822,876.20/66,603.82
  6. Step 6: Final answer
    x = 25,025.94

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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.