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Finding the Fourth Proportional to 66,544.59, 99,821.79 and 19,157.77

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Solution

The fourth proportional to 66,544.59, 99,821.79 and 19,157.77 is: 28,738.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,544.59 : 99,821.79 = 19,157.77 : x
  2. Step 2: Convert to fraction form
    66,544.59/99,821.79 = 19,157.77/x
  3. Step 3: Cross multiply
    66,544.59x = 99,821.79 × 19,157.77
  4. Step 4: Simplify right side
    66,544.59x = 1,912,362,893.81
  5. Step 5: Solve for x
    x = 1,912,362,893.81/66,544.59
  6. Step 6: Final answer
    x = 28,738.07

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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.