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Finding the Fourth Proportional to 92,889.28, 128,187.84 and 54,671.68

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Solution

The fourth proportional to 92,889.28, 128,187.84 and 54,671.68 is: 75,447.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,889.28 : 128,187.84 = 54,671.68 : x
  2. Step 2: Convert to fraction form
    92,889.28/128,187.84 = 54,671.68/x
  3. Step 3: Cross multiply
    92,889.28x = 128,187.84 × 54,671.68
  4. Step 4: Simplify right side
    92,889.28x = 7,008,244,568.37
  5. Step 5: Solve for x
    x = 7,008,244,568.37/92,889.28
  6. Step 6: Final answer
    x = 75,447.29

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1.5x scale

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.