Home / 47,619.48-71,423.46-12,561.78

Finding the Fourth Proportional to 47,619.48, 71,423.46 and 12,561.78

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Solution

The fourth proportional to 47,619.48, 71,423.46 and 12,561.78 is: 18,841.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,619.48 : 71,423.46 = 12,561.78 : x
  2. Step 2: Convert to fraction form
    47,619.48/71,423.46 = 12,561.78/x
  3. Step 3: Cross multiply
    47,619.48x = 71,423.46 × 12,561.78
  4. Step 4: Simplify right side
    47,619.48x = 897,205,791.36
  5. Step 5: Solve for x
    x = 897,205,791.36/47,619.48
  6. Step 6: Final answer
    x = 18,841.15

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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.