Home / 77,276.20-115,914.30-53,429.80

Finding the Fourth Proportional to 77,276.20, 115,914.30 and 53,429.80

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Solution

The fourth proportional to 77,276.20, 115,914.30 and 53,429.80 is: 80,144.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,276.20 : 115,914.30 = 53,429.80 : x
  2. Step 2: Convert to fraction form
    77,276.20/115,914.30 = 53,429.80/x
  3. Step 3: Cross multiply
    77,276.20x = 115,914.30 × 53,429.80
  4. Step 4: Simplify right side
    77,276.20x = 6,193,277,866.14
  5. Step 5: Solve for x
    x = 6,193,277,866.14/77,276.20
  6. Step 6: Final answer
    x = 80,144.70

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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.