Home / 85,157.15-117,516.89-49,367.90

Finding the Fourth Proportional to 85,157.15, 117,516.89 and 49,367.90

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Solution

The fourth proportional to 85,157.15, 117,516.89 and 49,367.90 is: 68,127.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,157.15 : 117,516.89 = 49,367.90 : x
  2. Step 2: Convert to fraction form
    85,157.15/117,516.89 = 49,367.90/x
  3. Step 3: Cross multiply
    85,157.15x = 117,516.89 × 49,367.90
  4. Step 4: Simplify right side
    85,157.15x = 5,801,562,491.04
  5. Step 5: Solve for x
    x = 5,801,562,491.04/85,157.15
  6. Step 6: Final answer
    x = 68,127.72

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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.