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Finding the Fourth Proportional to 92,805.62, 128,072.10 and 50,364.16

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Solution

The fourth proportional to 92,805.62, 128,072.10 and 50,364.16 is: 69,502.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,805.62 : 128,072.10 = 50,364.16 : x
  2. Step 2: Convert to fraction form
    92,805.62/128,072.10 = 50,364.16/x
  3. Step 3: Cross multiply
    92,805.62x = 128,072.10 × 50,364.16
  4. Step 4: Simplify right side
    92,805.62x = 6,450,243,735.94
  5. Step 5: Solve for x
    x = 6,450,243,735.94/92,805.62
  6. Step 6: Final answer
    x = 69,502.73

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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.