Home / 77,945.91-107,540.88-47,699.70

Finding the Fourth Proportional to 77,945.91, 107,540.88 and 47,699.70

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Solution

The fourth proportional to 77,945.91, 107,540.88 and 47,699.70 is: 65,810.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,945.91 : 107,540.88 = 47,699.70 : x
  2. Step 2: Convert to fraction form
    77,945.91/107,540.88 = 47,699.70/x
  3. Step 3: Cross multiply
    77,945.91x = 107,540.88 × 47,699.70
  4. Step 4: Simplify right side
    77,945.91x = 5,129,667,713.74
  5. Step 5: Solve for x
    x = 5,129,667,713.74/77,945.91
  6. Step 6: Final answer
    x = 65,810.61

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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.