Home / 47,180.43-70,770.65-12,120.12

Finding the Fourth Proportional to 47,180.43, 70,770.65 and 12,120.12

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Solution

The fourth proportional to 47,180.43, 70,770.65 and 12,120.12 is: 18,180.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,180.43 : 70,770.65 = 12,120.12 : x
  2. Step 2: Convert to fraction form
    47,180.43/70,770.65 = 12,120.12/x
  3. Step 3: Cross multiply
    47,180.43x = 70,770.65 × 12,120.12
  4. Step 4: Simplify right side
    47,180.43x = 857,748,770.48
  5. Step 5: Solve for x
    x = 857,748,770.48/47,180.43
  6. Step 6: Final answer
    x = 18,180.18

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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.