Home / 77,423.97-115,939.14-70,928.58

Finding the Fourth Proportional to 77,423.97, 115,939.14 and 70,928.58

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Solution

The fourth proportional to 77,423.97, 115,939.14 and 70,928.58 is: 106,212.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,423.97 : 115,939.14 = 70,928.58 : x
  2. Step 2: Convert to fraction form
    77,423.97/115,939.14 = 70,928.58/x
  3. Step 3: Cross multiply
    77,423.97x = 115,939.14 × 70,928.58
  4. Step 4: Simplify right side
    77,423.97x = 8,223,398,566.62
  5. Step 5: Solve for x
    x = 8,223,398,566.62/77,423.97
  6. Step 6: Final answer
    x = 106,212.57

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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.