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Finding the Fourth Proportional to 47,380, 71,070.36 and 16,215.52

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Solution

The fourth proportional to 47,380, 71,070.36 and 16,215.52 is: 24,323.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,380 : 71,070.36 = 16,215.52 : x
  2. Step 2: Convert to fraction form
    47,380/71,070.36 = 16,215.52/x
  3. Step 3: Cross multiply
    47,380x = 71,070.36 × 16,215.52
  4. Step 4: Simplify right side
    47,380x = 1,152,442,843.99
  5. Step 5: Solve for x
    x = 1,152,442,843.99/47,380
  6. Step 6: Final answer
    x = 24,323.40

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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.