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Finding the Fourth Proportional to 92,843.28, 139,128.84 and 57,676.32

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Solution

The fourth proportional to 92,843.28, 139,128.84 and 57,676.32 is: 86,429.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,843.28 : 139,128.84 = 57,676.32 : x
  2. Step 2: Convert to fraction form
    92,843.28/139,128.84 = 57,676.32/x
  3. Step 3: Cross multiply
    92,843.28x = 139,128.84 × 57,676.32
  4. Step 4: Simplify right side
    92,843.28x = 8,024,439,497.07
  5. Step 5: Solve for x
    x = 8,024,439,497.07/92,843.28
  6. Step 6: Final answer
    x = 86,429.94

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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.