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Finding the Fourth Proportional to 66,181.64, 99,216.63 and 28,713.47

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Solution

The fourth proportional to 66,181.64, 99,216.63 and 28,713.47 is: 43,045.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,181.64 : 99,216.63 = 28,713.47 : x
  2. Step 2: Convert to fraction form
    66,181.64/99,216.63 = 28,713.47/x
  3. Step 3: Cross multiply
    66,181.64x = 99,216.63 × 28,713.47
  4. Step 4: Simplify right side
    66,181.64x = 2,848,853,232.92
  5. Step 5: Solve for x
    x = 2,848,853,232.92/66,181.64
  6. Step 6: Final answer
    x = 43,045.98

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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.