Home / 77,166.81-115,665.55-39,728.88

Finding the Fourth Proportional to 77,166.81, 115,665.55 and 39,728.88

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Solution

The fourth proportional to 77,166.81, 115,665.55 and 39,728.88 is: 59,549.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,166.81 : 115,665.55 = 39,728.88 : x
  2. Step 2: Convert to fraction form
    77,166.81/115,665.55 = 39,728.88/x
  3. Step 3: Cross multiply
    77,166.81x = 115,665.55 × 39,728.88
  4. Step 4: Simplify right side
    77,166.81x = 4,595,262,756.08
  5. Step 5: Solve for x
    x = 4,595,262,756.08/77,166.81
  6. Step 6: Final answer
    x = 59,549.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.