Home / 71,698.62-98,944.56-39,867.78

Finding the Fourth Proportional to 71,698.62, 98,944.56 and 39,867.78

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Solution

The fourth proportional to 71,698.62, 98,944.56 and 39,867.78 is: 55,017.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,698.62 : 98,944.56 = 39,867.78 : x
  2. Step 2: Convert to fraction form
    71,698.62/98,944.56 = 39,867.78/x
  3. Step 3: Cross multiply
    71,698.62x = 98,944.56 × 39,867.78
  4. Step 4: Simplify right side
    71,698.62x = 3,944,699,950.28
  5. Step 5: Solve for x
    x = 3,944,699,950.28/71,698.62
  6. Step 6: Final answer
    x = 55,017.79

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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.