Home / 83,609.87-115,346.75-56,709.77

Finding the Fourth Proportional to 83,609.87, 115,346.75 and 56,709.77

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Solution

The fourth proportional to 83,609.87, 115,346.75 and 56,709.77 is: 78,235.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,609.87 : 115,346.75 = 56,709.77 : x
  2. Step 2: Convert to fraction form
    83,609.87/115,346.75 = 56,709.77/x
  3. Step 3: Cross multiply
    83,609.87x = 115,346.75 × 56,709.77
  4. Step 4: Simplify right side
    83,609.87x = 6,541,286,802.46
  5. Step 5: Solve for x
    x = 6,541,286,802.46/83,609.87
  6. Step 6: Final answer
    x = 78,235.83

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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.