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Finding the Fourth Proportional to 92,911.48, 128,211.50 and 50,469.10

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Solution

The fourth proportional to 92,911.48, 128,211.50 and 50,469.10 is: 69,643.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,911.48 : 128,211.50 = 50,469.10 : x
  2. Step 2: Convert to fraction form
    92,911.48/128,211.50 = 50,469.10/x
  3. Step 3: Cross multiply
    92,911.48x = 128,211.50 × 50,469.10
  4. Step 4: Simplify right side
    92,911.48x = 6,470,719,014.65
  5. Step 5: Solve for x
    x = 6,470,719,014.65/92,911.48
  6. Step 6: Final answer
    x = 69,643.91

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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.