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Finding the Fourth Proportional to 45,389.79, 68,084.69 and 13,799.79

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Solution

The fourth proportional to 45,389.79, 68,084.69 and 13,799.79 is: 20,699.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,389.79 : 68,084.69 = 13,799.79 : x
  2. Step 2: Convert to fraction form
    45,389.79/68,084.69 = 13,799.79/x
  3. Step 3: Cross multiply
    45,389.79x = 68,084.69 × 13,799.79
  4. Step 4: Simplify right side
    45,389.79x = 939,554,355.22
  5. Step 5: Solve for x
    x = 939,554,355.22/45,389.79
  6. Step 6: Final answer
    x = 20,699.69

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Similar ratio
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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.