Home / 77,043.45-115,562.75-45,668.51

Finding the Fourth Proportional to 77,043.45, 115,562.75 and 45,668.51

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Solution

The fourth proportional to 77,043.45, 115,562.75 and 45,668.51 is: 68,501.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,043.45 : 115,562.75 = 45,668.51 : x
  2. Step 2: Convert to fraction form
    77,043.45/115,562.75 = 45,668.51/x
  3. Step 3: Cross multiply
    77,043.45x = 115,562.75 × 45,668.51
  4. Step 4: Simplify right side
    77,043.45x = 5,277,577,797.85
  5. Step 5: Solve for x
    x = 5,277,577,797.85/77,043.45
  6. Step 6: Final answer
    x = 68,501.32

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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.