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Finding the Fourth Proportional to 72,455.60, 108,634.80 and 32,992.40

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Solution

The fourth proportional to 72,455.60, 108,634.80 and 32,992.40 is: 49,466.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,455.60 : 108,634.80 = 32,992.40 : x
  2. Step 2: Convert to fraction form
    72,455.60/108,634.80 = 32,992.40/x
  3. Step 3: Cross multiply
    72,455.60x = 108,634.80 × 32,992.40
  4. Step 4: Simplify right side
    72,455.60x = 3,584,122,775.52
  5. Step 5: Solve for x
    x = 3,584,122,775.52/72,455.60
  6. Step 6: Final answer
    x = 49,466.47

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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.