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Finding the Fourth Proportional to 72,452.34, 108,657.45 and 28,069.20

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Solution

The fourth proportional to 72,452.34, 108,657.45 and 28,069.20 is: 42,095.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,452.34 : 108,657.45 = 28,069.20 : x
  2. Step 2: Convert to fraction form
    72,452.34/108,657.45 = 28,069.20/x
  3. Step 3: Cross multiply
    72,452.34x = 108,657.45 × 28,069.20
  4. Step 4: Simplify right side
    72,452.34x = 3,049,927,695.54
  5. Step 5: Solve for x
    x = 3,049,927,695.54/72,452.34
  6. Step 6: Final answer
    x = 42,095.64

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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.