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Finding the Fourth Proportional to 72,567.47, 108,858.08 and 28,197.65

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Solution

The fourth proportional to 72,567.47, 108,858.08 and 28,197.65 is: 42,299.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,567.47 : 108,858.08 = 28,197.65 : x
  2. Step 2: Convert to fraction form
    72,567.47/108,858.08 = 28,197.65/x
  3. Step 3: Cross multiply
    72,567.47x = 108,858.08 × 28,197.65
  4. Step 4: Simplify right side
    72,567.47x = 3,069,541,973.93
  5. Step 5: Solve for x
    x = 3,069,541,973.93/72,567.47
  6. Step 6: Final answer
    x = 42,299.15

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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.