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Finding the Fourth Proportional to 64,028.64, 96,071.76 and 40,648.80

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Solution

The fourth proportional to 64,028.64, 96,071.76 and 40,648.80 is: 60,991.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,028.64 : 96,071.76 = 40,648.80 : x
  2. Step 2: Convert to fraction form
    64,028.64/96,071.76 = 40,648.80/x
  3. Step 3: Cross multiply
    64,028.64x = 96,071.76 × 40,648.80
  4. Step 4: Simplify right side
    64,028.64x = 3,905,201,757.89
  5. Step 5: Solve for x
    x = 3,905,201,757.89/64,028.64
  6. Step 6: Final answer
    x = 60,991.48

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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.