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Finding the Fourth Proportional to 43,620.98, 65,389.88 and 14,018.01

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Solution

The fourth proportional to 43,620.98, 65,389.88 and 14,018.01 is: 21,013.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,620.98 : 65,389.88 = 14,018.01 : x
  2. Step 2: Convert to fraction form
    43,620.98/65,389.88 = 14,018.01/x
  3. Step 3: Cross multiply
    43,620.98x = 65,389.88 × 14,018.01
  4. Step 4: Simplify right side
    43,620.98x = 916,636,149.39
  5. Step 5: Solve for x
    x = 916,636,149.39/43,620.98
  6. Step 6: Final answer
    x = 21,013.65

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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.