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Finding the Fourth Proportional to 80,435, 111,000.39 and 46,907.48

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Solution

The fourth proportional to 80,435, 111,000.39 and 46,907.48 is: 64,732.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,435 : 111,000.39 = 46,907.48 : x
  2. Step 2: Convert to fraction form
    80,435/111,000.39 = 46,907.48/x
  3. Step 3: Cross multiply
    80,435x = 111,000.39 × 46,907.48
  4. Step 4: Simplify right side
    80,435x = 5,206,748,573.92
  5. Step 5: Solve for x
    x = 5,206,748,573.92/80,435
  6. Step 6: Final answer
    x = 64,732.37

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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.