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Finding the Fourth Proportional to 45,693.40, 68,544.90 and 14,521.40

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Solution

The fourth proportional to 45,693.40, 68,544.90 and 14,521.40 is: 21,783.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,693.40 : 68,544.90 = 14,521.40 : x
  2. Step 2: Convert to fraction form
    45,693.40/68,544.90 = 14,521.40/x
  3. Step 3: Cross multiply
    45,693.40x = 68,544.90 × 14,521.40
  4. Step 4: Simplify right side
    45,693.40x = 995,367,910.86
  5. Step 5: Solve for x
    x = 995,367,910.86/45,693.40
  6. Step 6: Final answer
    x = 21,783.63

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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.