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Finding the Fourth Proportional to 64,185.53, 96,278.56 and 42,138.41

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Solution

The fourth proportional to 64,185.53, 96,278.56 and 42,138.41 is: 63,207.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,185.53 : 96,278.56 = 42,138.41 : x
  2. Step 2: Convert to fraction form
    64,185.53/96,278.56 = 42,138.41/x
  3. Step 3: Cross multiply
    64,185.53x = 96,278.56 × 42,138.41
  4. Step 4: Simplify right side
    64,185.53x = 4,057,024,954.10
  5. Step 5: Solve for x
    x = 4,057,024,954.10/64,185.53
  6. Step 6: Final answer
    x = 63,207.79

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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.