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Finding the Fourth Proportional to 92,812.80, 128,081.73 and 50,371.32

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Solution

The fourth proportional to 92,812.80, 128,081.73 and 50,371.32 is: 69,512.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,812.80 : 128,081.73 = 50,371.32 : x
  2. Step 2: Convert to fraction form
    92,812.80/128,081.73 = 50,371.32/x
  3. Step 3: Cross multiply
    92,812.80x = 128,081.73 × 50,371.32
  4. Step 4: Simplify right side
    92,812.80x = 6,451,645,807.98
  5. Step 5: Solve for x
    x = 6,451,645,807.98/92,812.80
  6. Step 6: Final answer
    x = 69,512.46

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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.