Home / 78,379.17-117,651.78-48,817.82

Finding the Fourth Proportional to 78,379.17, 117,651.78 and 48,817.82

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Solution

The fourth proportional to 78,379.17, 117,651.78 and 48,817.82 is: 73,278.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,379.17 : 117,651.78 = 48,817.82 : x
  2. Step 2: Convert to fraction form
    78,379.17/117,651.78 = 48,817.82/x
  3. Step 3: Cross multiply
    78,379.17x = 117,651.78 × 48,817.82
  4. Step 4: Simplify right side
    78,379.17x = 5,743,502,830.46
  5. Step 5: Solve for x
    x = 5,743,502,830.46/78,379.17
  6. Step 6: Final answer
    x = 73,278.43

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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.