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Finding the Fourth Proportional to 64,321.32, 96,491.31 and 19,951.65

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Solution

The fourth proportional to 64,321.32, 96,491.31 and 19,951.65 is: 29,930.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,321.32 : 96,491.31 = 19,951.65 : x
  2. Step 2: Convert to fraction form
    64,321.32/96,491.31 = 19,951.65/x
  3. Step 3: Cross multiply
    64,321.32x = 96,491.31 × 19,951.65
  4. Step 4: Simplify right side
    64,321.32x = 1,925,160,845.16
  5. Step 5: Solve for x
    x = 1,925,160,845.16/64,321.32
  6. Step 6: Final answer
    x = 29,930.37

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1.5x scale

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.