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Finding the Fourth Proportional to 49,491.80, 74,136.90 and 30,714.20

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Solution

The fourth proportional to 49,491.80, 74,136.90 and 30,714.20 is: 46,008.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,491.80 : 74,136.90 = 30,714.20 : x
  2. Step 2: Convert to fraction form
    49,491.80/74,136.90 = 30,714.20/x
  3. Step 3: Cross multiply
    49,491.80x = 74,136.90 × 30,714.20
  4. Step 4: Simplify right side
    49,491.80x = 2,277,055,573.98
  5. Step 5: Solve for x
    x = 2,277,055,573.98/49,491.80
  6. Step 6: Final answer
    x = 46,008.74

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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.