Home / 77,322.80-106,756.86-59,385.75

Finding the Fourth Proportional to 77,322.80, 106,756.86 and 59,385.75

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Solution

The fourth proportional to 77,322.80, 106,756.86 and 59,385.75 is: 81,991.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,322.80 : 106,756.86 = 59,385.75 : x
  2. Step 2: Convert to fraction form
    77,322.80/106,756.86 = 59,385.75/x
  3. Step 3: Cross multiply
    77,322.80x = 106,756.86 × 59,385.75
  4. Step 4: Simplify right side
    77,322.80x = 6,339,836,198.75
  5. Step 5: Solve for x
    x = 6,339,836,198.75/77,322.80
  6. Step 6: Final answer
    x = 81,991.81

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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.