Home / 85,318.60-117,745.50-49,508.68

Finding the Fourth Proportional to 85,318.60, 117,745.50 and 49,508.68

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Solution

The fourth proportional to 85,318.60, 117,745.50 and 49,508.68 is: 68,325.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,318.60 : 117,745.50 = 49,508.68 : x
  2. Step 2: Convert to fraction form
    85,318.60/117,745.50 = 49,508.68/x
  3. Step 3: Cross multiply
    85,318.60x = 117,745.50 × 49,508.68
  4. Step 4: Simplify right side
    85,318.60x = 5,829,424,280.94
  5. Step 5: Solve for x
    x = 5,829,424,280.94/85,318.60
  6. Step 6: Final answer
    x = 68,325.36

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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.