Home / 47,478.18-71,221.32-12,417.78

Finding the Fourth Proportional to 47,478.18, 71,221.32 and 12,417.78

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Solution

The fourth proportional to 47,478.18, 71,221.32 and 12,417.78 is: 18,627.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,478.18 : 71,221.32 = 12,417.78 : x
  2. Step 2: Convert to fraction form
    47,478.18/71,221.32 = 12,417.78/x
  3. Step 3: Cross multiply
    47,478.18x = 71,221.32 × 12,417.78
  4. Step 4: Simplify right side
    47,478.18x = 884,410,683.07
  5. Step 5: Solve for x
    x = 884,410,683.07/47,478.18
  6. Step 6: Final answer
    x = 18,627.73

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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.