Home / 74,928.64-112,490.56-50,128

Finding the Fourth Proportional to 74,928.64, 112,490.56 and 50,128

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Solution

The fourth proportional to 74,928.64, 112,490.56 and 50,128 is: 75,257.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,928.64 : 112,490.56 = 50,128 : x
  2. Step 2: Convert to fraction form
    74,928.64/112,490.56 = 50,128/x
  3. Step 3: Cross multiply
    74,928.64x = 112,490.56 × 50,128
  4. Step 4: Simplify right side
    74,928.64x = 5,638,926,791.68
  5. Step 5: Solve for x
    x = 5,638,926,791.68/74,928.64
  6. Step 6: Final answer
    x = 75,257.30

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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.