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Finding the Fourth Proportional to 64,267.65, 96,405.56 and 19,890.67

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Solution

The fourth proportional to 64,267.65, 96,405.56 and 19,890.67 is: 29,837.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,267.65 : 96,405.56 = 19,890.67 : x
  2. Step 2: Convert to fraction form
    64,267.65/96,405.56 = 19,890.67/x
  3. Step 3: Cross multiply
    64,267.65x = 96,405.56 × 19,890.67
  4. Step 4: Simplify right side
    64,267.65x = 1,917,571,180.13
  5. Step 5: Solve for x
    x = 1,917,571,180.13/64,267.65
  6. Step 6: Final answer
    x = 29,837.27

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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.