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Finding the Fourth Proportional to 92,813.39, 128,081.72 and 50,371.93

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Solution

The fourth proportional to 92,813.39, 128,081.72 and 50,371.93 is: 69,512.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,813.39 : 128,081.72 = 50,371.93 : x
  2. Step 2: Convert to fraction form
    92,813.39/128,081.72 = 50,371.93/x
  3. Step 3: Cross multiply
    92,813.39x = 128,081.72 × 50,371.93
  4. Step 4: Simplify right side
    92,813.39x = 6,451,722,541.85
  5. Step 5: Solve for x
    x = 6,451,722,541.85/92,813.39
  6. Step 6: Final answer
    x = 69,512.85

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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.