Home / 83,816.60-115,709.77-64,653.36

Finding the Fourth Proportional to 83,816.60, 115,709.77 and 64,653.36

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Solution

The fourth proportional to 83,816.60, 115,709.77 and 64,653.36 is: 89,254.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,816.60 : 115,709.77 = 64,653.36 : x
  2. Step 2: Convert to fraction form
    83,816.60/115,709.77 = 64,653.36/x
  3. Step 3: Cross multiply
    83,816.60x = 115,709.77 × 64,653.36
  4. Step 4: Simplify right side
    83,816.60x = 7,481,025,249.48
  5. Step 5: Solve for x
    x = 7,481,025,249.48/83,816.60
  6. Step 6: Final answer
    x = 89,254.69

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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.