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Finding the Fourth Proportional to 63,042.72, 87,039.48 and 39,201.84

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Solution

The fourth proportional to 63,042.72, 87,039.48 and 39,201.84 is: 54,123.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,042.72 : 87,039.48 = 39,201.84 : x
  2. Step 2: Convert to fraction form
    63,042.72/87,039.48 = 39,201.84/x
  3. Step 3: Cross multiply
    63,042.72x = 87,039.48 × 39,201.84
  4. Step 4: Simplify right side
    63,042.72x = 3,412,107,768.64
  5. Step 5: Solve for x
    x = 3,412,107,768.64/63,042.72
  6. Step 6: Final answer
    x = 54,123.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.