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Finding the Fourth Proportional to 79,575.60, 109,815.11 and 43,765.86

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Solution

The fourth proportional to 79,575.60, 109,815.11 and 43,765.86 is: 60,397.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,575.60 : 109,815.11 = 43,765.86 : x
  2. Step 2: Convert to fraction form
    79,575.60/109,815.11 = 43,765.86/x
  3. Step 3: Cross multiply
    79,575.60x = 109,815.11 × 43,765.86
  4. Step 4: Simplify right side
    79,575.60x = 4,806,152,730.14
  5. Step 5: Solve for x
    x = 4,806,152,730.14/79,575.60
  6. Step 6: Final answer
    x = 60,397.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.