Home / 47,971.44-71,955.54-12,909.78

Finding the Fourth Proportional to 47,971.44, 71,955.54 and 12,909.78

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Solution

The fourth proportional to 47,971.44, 71,955.54 and 12,909.78 is: 19,364.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,971.44 : 71,955.54 = 12,909.78 : x
  2. Step 2: Convert to fraction form
    47,971.44/71,955.54 = 12,909.78/x
  3. Step 3: Cross multiply
    47,971.44x = 71,955.54 × 12,909.78
  4. Step 4: Simplify right side
    47,971.44x = 928,930,191.18
  5. Step 5: Solve for x
    x = 928,930,191.18/47,971.44
  6. Step 6: Final answer
    x = 19,364.23

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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.