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Finding the Fourth Proportional to 66,548.72, 99,663.94 and 38,383.39

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Solution

The fourth proportional to 66,548.72, 99,663.94 and 38,383.39 is: 57,483.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,548.72 : 99,663.94 = 38,383.39 : x
  2. Step 2: Convert to fraction form
    66,548.72/99,663.94 = 38,383.39/x
  3. Step 3: Cross multiply
    66,548.72x = 99,663.94 × 38,383.39
  4. Step 4: Simplify right side
    66,548.72x = 3,825,439,274.00
  5. Step 5: Solve for x
    x = 3,825,439,274.00/66,548.72
  6. Step 6: Final answer
    x = 57,483.29

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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.