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Finding the Fourth Proportional to 63,174, 94,729.28 and 21,039.20

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Solution

The fourth proportional to 63,174, 94,729.28 and 21,039.20 is: 31,548.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,174 : 94,729.28 = 21,039.20 : x
  2. Step 2: Convert to fraction form
    63,174/94,729.28 = 21,039.20/x
  3. Step 3: Cross multiply
    63,174x = 94,729.28 × 21,039.20
  4. Step 4: Simplify right side
    63,174x = 1,993,028,267.78
  5. Step 5: Solve for x
    x = 1,993,028,267.78/63,174
  6. Step 6: Final answer
    x = 31,548.24

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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.