Home / 92,078.70-138,212.82-57,101.28

Finding the Fourth Proportional to 92,078.70, 138,212.82 and 57,101.28

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Solution

The fourth proportional to 92,078.70, 138,212.82 and 57,101.28 is: 85,710.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,078.70 : 138,212.82 = 57,101.28 : x
  2. Step 2: Convert to fraction form
    92,078.70/138,212.82 = 57,101.28/x
  3. Step 3: Cross multiply
    92,078.70x = 138,212.82 × 57,101.28
  4. Step 4: Simplify right side
    92,078.70x = 7,892,128,934.41
  5. Step 5: Solve for x
    x = 7,892,128,934.41/92,078.70
  6. Step 6: Final answer
    x = 85,710.69

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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.