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Finding the Fourth Proportional to 74,629.44, 102,978.84 and 45,964.08

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Solution

The fourth proportional to 74,629.44, 102,978.84 and 45,964.08 is: 63,424.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,629.44 : 102,978.84 = 45,964.08 : x
  2. Step 2: Convert to fraction form
    74,629.44/102,978.84 = 45,964.08/x
  3. Step 3: Cross multiply
    74,629.44x = 102,978.84 × 45,964.08
  4. Step 4: Simplify right side
    74,629.44x = 4,733,327,640.07
  5. Step 5: Solve for x
    x = 4,733,327,640.07/74,629.44
  6. Step 6: Final answer
    x = 63,424.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.