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Finding the Fourth Proportional to 77,763.70, 116,645.55 and 76,467.70

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Solution

The fourth proportional to 77,763.70, 116,645.55 and 76,467.70 is: 114,701.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,763.70 : 116,645.55 = 76,467.70 : x
  2. Step 2: Convert to fraction form
    77,763.70/116,645.55 = 76,467.70/x
  3. Step 3: Cross multiply
    77,763.70x = 116,645.55 × 76,467.70
  4. Step 4: Simplify right side
    77,763.70x = 8,919,616,923.74
  5. Step 5: Solve for x
    x = 8,919,616,923.74/77,763.70
  6. Step 6: Final answer
    x = 114,701.55

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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.