Home / 75,708.16-113,575.92-31,310.80

Finding the Fourth Proportional to 75,708.16, 113,575.92 and 31,310.80

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Solution

The fourth proportional to 75,708.16, 113,575.92 and 31,310.80 is: 46,971.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,708.16 : 113,575.92 = 31,310.80 : x
  2. Step 2: Convert to fraction form
    75,708.16/113,575.92 = 31,310.80/x
  3. Step 3: Cross multiply
    75,708.16x = 113,575.92 × 31,310.80
  4. Step 4: Simplify right side
    75,708.16x = 3,556,152,915.94
  5. Step 5: Solve for x
    x = 3,556,152,915.94/75,708.16
  6. Step 6: Final answer
    x = 46,971.86

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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.