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Finding the Fourth Proportional to 66,323.64, 99,491.96 and 19,589.88

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Solution

The fourth proportional to 66,323.64, 99,491.96 and 19,589.88 is: 29,386.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,323.64 : 99,491.96 = 19,589.88 : x
  2. Step 2: Convert to fraction form
    66,323.64/99,491.96 = 19,589.88/x
  3. Step 3: Cross multiply
    66,323.64x = 99,491.96 × 19,589.88
  4. Step 4: Simplify right side
    66,323.64x = 1,949,035,557.36
  5. Step 5: Solve for x
    x = 1,949,035,557.36/66,323.64
  6. Step 6: Final answer
    x = 29,386.74

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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.