Home / 92,874.60-139,321.62-57,785.40

Finding the Fourth Proportional to 92,874.60, 139,321.62 and 57,785.40

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Solution

The fourth proportional to 92,874.60, 139,321.62 and 57,785.40 is: 86,684.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,874.60 : 139,321.62 = 57,785.40 : x
  2. Step 2: Convert to fraction form
    92,874.60/139,321.62 = 57,785.40/x
  3. Step 3: Cross multiply
    92,874.60x = 139,321.62 × 57,785.40
  4. Step 4: Simplify right side
    92,874.60x = 8,050,755,540.35
  5. Step 5: Solve for x
    x = 8,050,755,540.35/92,874.60
  6. Step 6: Final answer
    x = 86,684.15

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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.