Home / 56,745.90-85,171.32-28,685.70

Finding the Fourth Proportional to 56,745.90, 85,171.32 and 28,685.70

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Solution

The fourth proportional to 56,745.90, 85,171.32 and 28,685.70 is: 43,055.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,745.90 : 85,171.32 = 28,685.70 : x
  2. Step 2: Convert to fraction form
    56,745.90/85,171.32 = 28,685.70/x
  3. Step 3: Cross multiply
    56,745.90x = 85,171.32 × 28,685.70
  4. Step 4: Simplify right side
    56,745.90x = 2,443,198,934.12
  5. Step 5: Solve for x
    x = 2,443,198,934.12/56,745.90
  6. Step 6: Final answer
    x = 43,055.07

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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.