Home / 47,977.44-71,964.54-12,915.78

Finding the Fourth Proportional to 47,977.44, 71,964.54 and 12,915.78

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Solution

The fourth proportional to 47,977.44, 71,964.54 and 12,915.78 is: 19,373.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,977.44 : 71,964.54 = 12,915.78 : x
  2. Step 2: Convert to fraction form
    47,977.44/71,964.54 = 12,915.78/x
  3. Step 3: Cross multiply
    47,977.44x = 71,964.54 × 12,915.78
  4. Step 4: Simplify right side
    47,977.44x = 929,478,166.44
  5. Step 5: Solve for x
    x = 929,478,166.44/47,977.44
  6. Step 6: Final answer
    x = 19,373.23

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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.