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Finding the Fourth Proportional to 73,018.32, 100,765.56 and 39,484.32

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Solution

The fourth proportional to 73,018.32, 100,765.56 and 39,484.32 is: 54,488.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,018.32 : 100,765.56 = 39,484.32 : x
  2. Step 2: Convert to fraction form
    73,018.32/100,765.56 = 39,484.32/x
  3. Step 3: Cross multiply
    73,018.32x = 100,765.56 × 39,484.32
  4. Step 4: Simplify right side
    73,018.32x = 3,978,659,616.02
  5. Step 5: Solve for x
    x = 3,978,659,616.02/73,018.32
  6. Step 6: Final answer
    x = 54,488.51

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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.