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Finding the Fourth Proportional to 66,482.37, 99,722.79 and 19,098.63

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Solution

The fourth proportional to 66,482.37, 99,722.79 and 19,098.63 is: 28,647.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,482.37 : 99,722.79 = 19,098.63 : x
  2. Step 2: Convert to fraction form
    66,482.37/99,722.79 = 19,098.63/x
  3. Step 3: Cross multiply
    66,482.37x = 99,722.79 × 19,098.63
  4. Step 4: Simplify right side
    66,482.37x = 1,904,568,170.16
  5. Step 5: Solve for x
    x = 1,904,568,170.16/66,482.37
  6. Step 6: Final answer
    x = 28,647.72

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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.