Home / 77,120.09-115,621.49-53,364.48

Finding the Fourth Proportional to 77,120.09, 115,621.49 and 53,364.48

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Solution

The fourth proportional to 77,120.09, 115,621.49 and 53,364.48 is: 80,006.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,120.09 : 115,621.49 = 53,364.48 : x
  2. Step 2: Convert to fraction form
    77,120.09/115,621.49 = 53,364.48/x
  3. Step 3: Cross multiply
    77,120.09x = 115,621.49 × 53,364.48
  4. Step 4: Simplify right side
    77,120.09x = 6,170,080,423.85
  5. Step 5: Solve for x
    x = 6,170,080,423.85/77,120.09
  6. Step 6: Final answer
    x = 80,006.14

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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.