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Finding the Fourth Proportional to 66,454.02, 99,698.04 and 19,705.68

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Solution

The fourth proportional to 66,454.02, 99,698.04 and 19,705.68 is: 29,563.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,454.02 : 99,698.04 = 19,705.68 : x
  2. Step 2: Convert to fraction form
    66,454.02/99,698.04 = 19,705.68/x
  3. Step 3: Cross multiply
    66,454.02x = 99,698.04 × 19,705.68
  4. Step 4: Simplify right side
    66,454.02x = 1,964,617,672.87
  5. Step 5: Solve for x
    x = 1,964,617,672.87/66,454.02
  6. Step 6: Final answer
    x = 29,563.56

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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.