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Finding the Fourth Proportional to 92,879.62, 128,172.75 and 50,438.46

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Solution

The fourth proportional to 92,879.62, 128,172.75 and 50,438.46 is: 69,604.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,879.62 : 128,172.75 = 50,438.46 : x
  2. Step 2: Convert to fraction form
    92,879.62/128,172.75 = 50,438.46/x
  3. Step 3: Cross multiply
    92,879.62x = 128,172.75 × 50,438.46
  4. Step 4: Simplify right side
    92,879.62x = 6,464,836,123.97
  5. Step 5: Solve for x
    x = 6,464,836,123.97/92,879.62
  6. Step 6: Final answer
    x = 69,604.46

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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.