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Finding the Fourth Proportional to 85,434.44, 117,879.57 and 49,602.87

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Solution

The fourth proportional to 85,434.44, 117,879.57 and 49,602.87 is: 68,440.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,434.44 : 117,879.57 = 49,602.87 : x
  2. Step 2: Convert to fraction form
    85,434.44/117,879.57 = 49,602.87/x
  3. Step 3: Cross multiply
    85,434.44x = 117,879.57 × 49,602.87
  4. Step 4: Simplify right side
    85,434.44x = 5,847,164,986.37
  5. Step 5: Solve for x
    x = 5,847,164,986.37/85,434.44
  6. Step 6: Final answer
    x = 68,440.38

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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.