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Finding the Fourth Proportional to 66,890.21, 100,335.11 and 16,970.21

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Solution

The fourth proportional to 66,890.21, 100,335.11 and 16,970.21 is: 25,455.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,890.21 : 100,335.11 = 16,970.21 : x
  2. Step 2: Convert to fraction form
    66,890.21/100,335.11 = 16,970.21/x
  3. Step 3: Cross multiply
    66,890.21x = 100,335.11 × 16,970.21
  4. Step 4: Simplify right side
    66,890.21x = 1,702,707,676.80
  5. Step 5: Solve for x
    x = 1,702,707,676.80/66,890.21
  6. Step 6: Final answer
    x = 25,455.26

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1.5x scale

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.