Home / 77,147.04-115,729.68-27,216.72

Finding the Fourth Proportional to 77,147.04, 115,729.68 and 27,216.72

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Solution

The fourth proportional to 77,147.04, 115,729.68 and 27,216.72 is: 40,828.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,147.04 : 115,729.68 = 27,216.72 : x
  2. Step 2: Convert to fraction form
    77,147.04/115,729.68 = 27,216.72/x
  3. Step 3: Cross multiply
    77,147.04x = 115,729.68 × 27,216.72
  4. Step 4: Simplify right side
    77,147.04x = 3,149,782,296.25
  5. Step 5: Solve for x
    x = 3,149,782,296.25/77,147.04
  6. Step 6: Final answer
    x = 40,828.30

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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.