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Finding the Fourth Proportional to 92,857.96, 128,140.42 and 50,415.56

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Solution

The fourth proportional to 92,857.96, 128,140.42 and 50,415.56 is: 69,571.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,857.96 : 128,140.42 = 50,415.56 : x
  2. Step 2: Convert to fraction form
    92,857.96/128,140.42 = 50,415.56/x
  3. Step 3: Cross multiply
    92,857.96x = 128,140.42 × 50,415.56
  4. Step 4: Simplify right side
    92,857.96x = 6,460,271,032.94
  5. Step 5: Solve for x
    x = 6,460,271,032.94/92,857.96
  6. Step 6: Final answer
    x = 69,571.54

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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.