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Finding the Fourth Proportional to 73,906.56, 101,990.88 and 40,372.80

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Solution

The fourth proportional to 73,906.56, 101,990.88 and 40,372.80 is: 55,714.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,906.56 : 101,990.88 = 40,372.80 : x
  2. Step 2: Convert to fraction form
    73,906.56/101,990.88 = 40,372.80/x
  3. Step 3: Cross multiply
    73,906.56x = 101,990.88 × 40,372.80
  4. Step 4: Simplify right side
    73,906.56x = 4,117,657,400.06
  5. Step 5: Solve for x
    x = 4,117,657,400.06/73,906.56
  6. Step 6: Final answer
    x = 55,714.37

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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.