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Finding the Fourth Proportional to 45,390.93, 68,086.88 and 13,806.12

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Solution

The fourth proportional to 45,390.93, 68,086.88 and 13,806.12 is: 20,709.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,390.93 : 68,086.88 = 13,806.12 : x
  2. Step 2: Convert to fraction form
    45,390.93/68,086.88 = 13,806.12/x
  3. Step 3: Cross multiply
    45,390.93x = 68,086.88 × 13,806.12
  4. Step 4: Simplify right side
    45,390.93x = 940,015,635.71
  5. Step 5: Solve for x
    x = 940,015,635.71/45,390.93
  6. Step 6: Final answer
    x = 20,709.33

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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.