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Finding the Fourth Proportional to 79,320.65, 118,927.73 and 31,245.30

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Solution

The fourth proportional to 79,320.65, 118,927.73 and 31,245.30 is: 46,846.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,320.65 : 118,927.73 = 31,245.30 : x
  2. Step 2: Convert to fraction form
    79,320.65/118,927.73 = 31,245.30/x
  3. Step 3: Cross multiply
    79,320.65x = 118,927.73 × 31,245.30
  4. Step 4: Simplify right side
    79,320.65x = 3,715,932,445.94
  5. Step 5: Solve for x
    x = 3,715,932,445.94/79,320.65
  6. Step 6: Final answer
    x = 46,846.98

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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.