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Finding the Fourth Proportional to 90,674.92, 136,053.42 and 46,279

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Solution

The fourth proportional to 90,674.92, 136,053.42 and 46,279 is: 69,439.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,674.92 : 136,053.42 = 46,279 : x
  2. Step 2: Convert to fraction form
    90,674.92/136,053.42 = 46,279/x
  3. Step 3: Cross multiply
    90,674.92x = 136,053.42 × 46,279
  4. Step 4: Simplify right side
    90,674.92x = 6,296,416,224.18
  5. Step 5: Solve for x
    x = 6,296,416,224.18/90,674.92
  6. Step 6: Final answer
    x = 69,439.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.