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Finding the Fourth Proportional to 72,351.60, 108,558.64 and 39,065.04

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Solution

The fourth proportional to 72,351.60, 108,558.64 and 39,065.04 is: 58,614.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,351.60 : 108,558.64 = 39,065.04 : x
  2. Step 2: Convert to fraction form
    72,351.60/108,558.64 = 39,065.04/x
  3. Step 3: Cross multiply
    72,351.60x = 108,558.64 × 39,065.04
  4. Step 4: Simplify right side
    72,351.60x = 4,240,847,613.95
  5. Step 5: Solve for x
    x = 4,240,847,613.95/72,351.60
  6. Step 6: Final answer
    x = 58,614.43

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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.