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Finding the Fourth Proportional to 64,129.80, 96,205.24 and 19,756.56

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Solution

The fourth proportional to 64,129.80, 96,205.24 and 19,756.56 is: 29,638.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,129.80 : 96,205.24 = 19,756.56 : x
  2. Step 2: Convert to fraction form
    64,129.80/96,205.24 = 19,756.56/x
  3. Step 3: Cross multiply
    64,129.80x = 96,205.24 × 19,756.56
  4. Step 4: Simplify right side
    64,129.80x = 1,900,684,596.37
  5. Step 5: Solve for x
    x = 1,900,684,596.37/64,129.80
  6. Step 6: Final answer
    x = 29,638.09

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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.