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Finding the Fourth Proportional to 79,342.60, 109,489.50 and 47,492.68

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Solution

The fourth proportional to 79,342.60, 109,489.50 and 47,492.68 is: 65,537.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,342.60 : 109,489.50 = 47,492.68 : x
  2. Step 2: Convert to fraction form
    79,342.60/109,489.50 = 47,492.68/x
  3. Step 3: Cross multiply
    79,342.60x = 109,489.50 × 47,492.68
  4. Step 4: Simplify right side
    79,342.60x = 5,199,949,786.86
  5. Step 5: Solve for x
    x = 5,199,949,786.86/79,342.60
  6. Step 6: Final answer
    x = 65,537.93

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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.