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Finding the Fourth Proportional to 84,495.96, 126,700.20 and 45,042.48

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Solution

The fourth proportional to 84,495.96, 126,700.20 and 45,042.48 is: 67,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,495.96 : 126,700.20 = 45,042.48 : x
  2. Step 2: Convert to fraction form
    84,495.96/126,700.20 = 45,042.48/x
  3. Step 3: Cross multiply
    84,495.96x = 126,700.20 × 45,042.48
  4. Step 4: Simplify right side
    84,495.96x = 5,706,891,224.50
  5. Step 5: Solve for x
    x = 5,706,891,224.50/84,495.96
  6. Step 6: Final answer
    x = 67,540.40

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1.5x scale

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.