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Finding the Fourth Proportional to 72,364.80, 108,530.80 and 25,617.68

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Solution

The fourth proportional to 72,364.80, 108,530.80 and 25,617.68 is: 38,420.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,364.80 : 108,530.80 = 25,617.68 : x
  2. Step 2: Convert to fraction form
    72,364.80/108,530.80 = 25,617.68/x
  3. Step 3: Cross multiply
    72,364.80x = 108,530.80 × 25,617.68
  4. Step 4: Simplify right side
    72,364.80x = 2,780,307,304.54
  5. Step 5: Solve for x
    x = 2,780,307,304.54/72,364.80
  6. Step 6: Final answer
    x = 38,420.71

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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.