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Finding the Fourth Proportional to 47,893.73, 71,840.60 and 19,782.88

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Solution

The fourth proportional to 47,893.73, 71,840.60 and 19,782.88 is: 29,674.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,893.73 : 71,840.60 = 19,782.88 : x
  2. Step 2: Convert to fraction form
    47,893.73/71,840.60 = 19,782.88/x
  3. Step 3: Cross multiply
    47,893.73x = 71,840.60 × 19,782.88
  4. Step 4: Simplify right side
    47,893.73x = 1,421,213,838.78
  5. Step 5: Solve for x
    x = 1,421,213,838.78/47,893.73
  6. Step 6: Final answer
    x = 29,674.32

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1.5x scale

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.