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Finding the Fourth Proportional to 92,971.27, 128,299.90 and 50,529.80

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Solution

The fourth proportional to 92,971.27, 128,299.90 and 50,529.80 is: 69,730.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,971.27 : 128,299.90 = 50,529.80 : x
  2. Step 2: Convert to fraction form
    92,971.27/128,299.90 = 50,529.80/x
  3. Step 3: Cross multiply
    92,971.27x = 128,299.90 × 50,529.80
  4. Step 4: Simplify right side
    92,971.27x = 6,482,968,215.35
  5. Step 5: Solve for x
    x = 6,482,968,215.35/92,971.27
  6. Step 6: Final answer
    x = 69,730.88

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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.