Home / 77,289.70-115,934.55-53,443.30

Finding the Fourth Proportional to 77,289.70, 115,934.55 and 53,443.30

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Solution

The fourth proportional to 77,289.70, 115,934.55 and 53,443.30 is: 80,164.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,289.70 : 115,934.55 = 53,443.30 : x
  2. Step 2: Convert to fraction form
    77,289.70/115,934.55 = 53,443.30/x
  3. Step 3: Cross multiply
    77,289.70x = 115,934.55 × 53,443.30
  4. Step 4: Simplify right side
    77,289.70x = 6,195,924,936.02
  5. Step 5: Solve for x
    x = 6,195,924,936.02/77,289.70
  6. Step 6: Final answer
    x = 80,164.95

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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.