Home / 47,858.12-71,781.64-12,800.60

Finding the Fourth Proportional to 47,858.12, 71,781.64 and 12,800.60

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Solution

The fourth proportional to 47,858.12, 71,781.64 and 12,800.60 is: 19,199.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,858.12 : 71,781.64 = 12,800.60 : x
  2. Step 2: Convert to fraction form
    47,858.12/71,781.64 = 12,800.60/x
  3. Step 3: Cross multiply
    47,858.12x = 71,781.64 × 12,800.60
  4. Step 4: Simplify right side
    47,858.12x = 918,848,060.98
  5. Step 5: Solve for x
    x = 918,848,060.98/47,858.12
  6. Step 6: Final answer
    x = 19,199.42

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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.