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Finding the Fourth Proportional to 92,760.63, 128,009.73 and 50,319.33

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Solution

The fourth proportional to 92,760.63, 128,009.73 and 50,319.33 is: 69,440.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,760.63 : 128,009.73 = 50,319.33 : x
  2. Step 2: Convert to fraction form
    92,760.63/128,009.73 = 50,319.33/x
  3. Step 3: Cross multiply
    92,760.63x = 128,009.73 × 50,319.33
  4. Step 4: Simplify right side
    92,760.63x = 6,441,363,847.08
  5. Step 5: Solve for x
    x = 6,441,363,847.08/92,760.63
  6. Step 6: Final answer
    x = 69,440.71

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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.