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Finding the Fourth Proportional to 92,806.36, 128,072.88 and 50,364.90

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Solution

The fourth proportional to 92,806.36, 128,072.88 and 50,364.90 is: 69,503.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,806.36 : 128,072.88 = 50,364.90 : x
  2. Step 2: Convert to fraction form
    92,806.36/128,072.88 = 50,364.90/x
  3. Step 3: Cross multiply
    92,806.36x = 128,072.88 × 50,364.90
  4. Step 4: Simplify right side
    92,806.36x = 6,450,377,793.91
  5. Step 5: Solve for x
    x = 6,450,377,793.91/92,806.36
  6. Step 6: Final answer
    x = 69,503.62

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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.