Home / 47,915.80-66,128.73-28,801.76

Finding the Fourth Proportional to 47,915.80, 66,128.73 and 28,801.76

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Solution

The fourth proportional to 47,915.80, 66,128.73 and 28,801.76 is: 39,749.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,915.80 : 66,128.73 = 28,801.76 : x
  2. Step 2: Convert to fraction form
    47,915.80/66,128.73 = 28,801.76/x
  3. Step 3: Cross multiply
    47,915.80x = 66,128.73 × 28,801.76
  4. Step 4: Simplify right side
    47,915.80x = 1,904,624,103.87
  5. Step 5: Solve for x
    x = 1,904,624,103.87/47,915.80
  6. Step 6: Final answer
    x = 39,749.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.