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Finding the Fourth Proportional to 45,671.98, 68,499.88 and 12,394.63

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Solution

The fourth proportional to 45,671.98, 68,499.88 and 12,394.63 is: 18,589.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,671.98 : 68,499.88 = 12,394.63 : x
  2. Step 2: Convert to fraction form
    45,671.98/68,499.88 = 12,394.63/x
  3. Step 3: Cross multiply
    45,671.98x = 68,499.88 × 12,394.63
  4. Step 4: Simplify right side
    45,671.98x = 849,030,529.63
  5. Step 5: Solve for x
    x = 849,030,529.63/45,671.98
  6. Step 6: Final answer
    x = 18,589.75

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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.