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Finding the Fourth Proportional to 80,687.63, 111,348.93 and 47,153.63

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Solution

The fourth proportional to 80,687.63, 111,348.93 and 47,153.63 is: 65,072.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,687.63 : 111,348.93 = 47,153.63 : x
  2. Step 2: Convert to fraction form
    80,687.63/111,348.93 = 47,153.63/x
  3. Step 3: Cross multiply
    80,687.63x = 111,348.93 × 47,153.63
  4. Step 4: Simplify right side
    80,687.63x = 5,250,505,689.37
  5. Step 5: Solve for x
    x = 5,250,505,689.37/80,687.63
  6. Step 6: Final answer
    x = 65,072.01

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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.