Home / 76,403.09-105,441.03-44,139.06

Finding the Fourth Proportional to 76,403.09, 105,441.03 and 44,139.06

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Solution

The fourth proportional to 76,403.09, 105,441.03 and 44,139.06 is: 60,914.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,403.09 : 105,441.03 = 44,139.06 : x
  2. Step 2: Convert to fraction form
    76,403.09/105,441.03 = 44,139.06/x
  3. Step 3: Cross multiply
    76,403.09x = 105,441.03 × 44,139.06
  4. Step 4: Simplify right side
    76,403.09x = 4,654,067,949.63
  5. Step 5: Solve for x
    x = 4,654,067,949.63/76,403.09
  6. Step 6: Final answer
    x = 60,914.66

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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.