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Finding the Fourth Proportional to 69,520.68, 104,281.92 and 45,978.84

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Solution

The fourth proportional to 69,520.68, 104,281.92 and 45,978.84 is: 68,968.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,520.68 : 104,281.92 = 45,978.84 : x
  2. Step 2: Convert to fraction form
    69,520.68/104,281.92 = 45,978.84/x
  3. Step 3: Cross multiply
    69,520.68x = 104,281.92 × 45,978.84
  4. Step 4: Simplify right side
    69,520.68x = 4,794,761,714.57
  5. Step 5: Solve for x
    x = 4,794,761,714.57/69,520.68
  6. Step 6: Final answer
    x = 68,968.86

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1.5x scale

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.