Home / 71,699.58-98,944.14-39,867.78

Finding the Fourth Proportional to 71,699.58, 98,944.14 and 39,867.78

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Solution

The fourth proportional to 71,699.58, 98,944.14 and 39,867.78 is: 55,016.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,699.58 : 98,944.14 = 39,867.78 : x
  2. Step 2: Convert to fraction form
    71,699.58/98,944.14 = 39,867.78/x
  3. Step 3: Cross multiply
    71,699.58x = 98,944.14 × 39,867.78
  4. Step 4: Simplify right side
    71,699.58x = 3,944,683,205.81
  5. Step 5: Solve for x
    x = 3,944,683,205.81/71,699.58
  6. Step 6: Final answer
    x = 55,016.82

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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.