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Finding the Fourth Proportional to 43,604.70, 65,400.91 and 14,018.78

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Solution

The fourth proportional to 43,604.70, 65,400.91 and 14,018.78 is: 21,026.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,604.70 : 65,400.91 = 14,018.78 : x
  2. Step 2: Convert to fraction form
    43,604.70/65,400.91 = 14,018.78/x
  3. Step 3: Cross multiply
    43,604.70x = 65,400.91 × 14,018.78
  4. Step 4: Simplify right side
    43,604.70x = 916,840,607.04
  5. Step 5: Solve for x
    x = 916,840,607.04/43,604.70
  6. Step 6: Final answer
    x = 21,026.19

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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.