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Finding the Fourth Proportional to 72,836.79, 109,051.97 and 37,221.50

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Solution

The fourth proportional to 72,836.79, 109,051.97 and 37,221.50 is: 55,728.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,836.79 : 109,051.97 = 37,221.50 : x
  2. Step 2: Convert to fraction form
    72,836.79/109,051.97 = 37,221.50/x
  3. Step 3: Cross multiply
    72,836.79x = 109,051.97 × 37,221.50
  4. Step 4: Simplify right side
    72,836.79x = 4,059,077,169.99
  5. Step 5: Solve for x
    x = 4,059,077,169.99/72,836.79
  6. Step 6: Final answer
    x = 55,728.39

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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.