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Finding the Fourth Proportional to 45,809.14, 68,723.51 and 14,218.51

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Solution

The fourth proportional to 45,809.14, 68,723.51 and 14,218.51 is: 21,330.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,809.14 : 68,723.51 = 14,218.51 : x
  2. Step 2: Convert to fraction form
    45,809.14/68,723.51 = 14,218.51/x
  3. Step 3: Cross multiply
    45,809.14x = 68,723.51 × 14,218.51
  4. Step 4: Simplify right side
    45,809.14x = 977,145,914.17
  5. Step 5: Solve for x
    x = 977,145,914.17/45,809.14
  6. Step 6: Final answer
    x = 21,330.81

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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.