Home / 30,771.25-45,915.35-28,890.43

Finding the Fourth Proportional to 30,771.25, 45,915.35 and 28,890.43

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Solution

The fourth proportional to 30,771.25, 45,915.35 and 28,890.43 is: 43,108.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,771.25 : 45,915.35 = 28,890.43 : x
  2. Step 2: Convert to fraction form
    30,771.25/45,915.35 = 28,890.43/x
  3. Step 3: Cross multiply
    30,771.25x = 45,915.35 × 28,890.43
  4. Step 4: Simplify right side
    30,771.25x = 1,326,514,205.10
  5. Step 5: Solve for x
    x = 1,326,514,205.10/30,771.25
  6. Step 6: Final answer
    x = 43,108.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.