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Finding the Fourth Proportional to 64,128.39, 96,212.03 and 30,839.01

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Solution

The fourth proportional to 64,128.39, 96,212.03 and 30,839.01 is: 46,267.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,128.39 : 96,212.03 = 30,839.01 : x
  2. Step 2: Convert to fraction form
    64,128.39/96,212.03 = 30,839.01/x
  3. Step 3: Cross multiply
    64,128.39x = 96,212.03 × 30,839.01
  4. Step 4: Simplify right side
    64,128.39x = 2,967,083,601.10
  5. Step 5: Solve for x
    x = 2,967,083,601.10/64,128.39
  6. Step 6: Final answer
    x = 46,267.86

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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.