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Finding the Fourth Proportional to 84,009.89, 126,038.19 and 36,629.12

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Solution

The fourth proportional to 84,009.89, 126,038.19 and 36,629.12 is: 54,953.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,009.89 : 126,038.19 = 36,629.12 : x
  2. Step 2: Convert to fraction form
    84,009.89/126,038.19 = 36,629.12/x
  3. Step 3: Cross multiply
    84,009.89x = 126,038.19 × 36,629.12
  4. Step 4: Simplify right side
    84,009.89x = 4,616,668,039.88
  5. Step 5: Solve for x
    x = 4,616,668,039.88/84,009.89
  6. Step 6: Final answer
    x = 54,953.86

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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.