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Finding the Fourth Proportional to 81,143.37, 111,975.80 and 45,333.63

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Solution

The fourth proportional to 81,143.37, 111,975.80 and 45,333.63 is: 62,559.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,143.37 : 111,975.80 = 45,333.63 : x
  2. Step 2: Convert to fraction form
    81,143.37/111,975.80 = 45,333.63/x
  3. Step 3: Cross multiply
    81,143.37x = 111,975.80 × 45,333.63
  4. Step 4: Simplify right side
    81,143.37x = 5,076,269,259.49
  5. Step 5: Solve for x
    x = 5,076,269,259.49/81,143.37
  6. Step 6: Final answer
    x = 62,559.26

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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.