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Finding the Fourth Proportional to 72,530.94, 108,730.81 and 25,772.88

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Solution

The fourth proportional to 72,530.94, 108,730.81 and 25,772.88 is: 38,636.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,530.94 : 108,730.81 = 25,772.88 : x
  2. Step 2: Convert to fraction form
    72,530.94/108,730.81 = 25,772.88/x
  3. Step 3: Cross multiply
    72,530.94x = 108,730.81 × 25,772.88
  4. Step 4: Simplify right side
    72,530.94x = 2,802,306,413.42
  5. Step 5: Solve for x
    x = 2,802,306,413.42/72,530.94
  6. Step 6: Final answer
    x = 38,636.01

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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.