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Finding the Fourth Proportional to 72,326.34, 108,520.65 and 39,039.80

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Solution

The fourth proportional to 72,326.34, 108,520.65 and 39,039.80 is: 58,576.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,326.34 : 108,520.65 = 39,039.80 : x
  2. Step 2: Convert to fraction form
    72,326.34/108,520.65 = 39,039.80/x
  3. Step 3: Cross multiply
    72,326.34x = 108,520.65 × 39,039.80
  4. Step 4: Simplify right side
    72,326.34x = 4,236,623,929.27
  5. Step 5: Solve for x
    x = 4,236,623,929.27/72,326.34
  6. Step 6: Final answer
    x = 58,576.50

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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.