Home / 47,741.12-71,612.88-12,680.72

Finding the Fourth Proportional to 47,741.12, 71,612.88 and 12,680.72

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Solution

The fourth proportional to 47,741.12, 71,612.88 and 12,680.72 is: 19,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,741.12 : 71,612.88 = 12,680.72 : x
  2. Step 2: Convert to fraction form
    47,741.12/71,612.88 = 12,680.72/x
  3. Step 3: Cross multiply
    47,741.12x = 71,612.88 × 12,680.72
  4. Step 4: Simplify right side
    47,741.12x = 908,102,879.67
  5. Step 5: Solve for x
    x = 908,102,879.67/47,741.12
  6. Step 6: Final answer
    x = 19,021.40

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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.