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Finding the Fourth Proportional to 79,305.60, 109,384.35 and 67,350

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Solution

The fourth proportional to 79,305.60, 109,384.35 and 67,350 is: 92,894.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,305.60 : 109,384.35 = 67,350 : x
  2. Step 2: Convert to fraction form
    79,305.60/109,384.35 = 67,350/x
  3. Step 3: Cross multiply
    79,305.60x = 109,384.35 × 67,350
  4. Step 4: Simplify right side
    79,305.60x = 7,367,035,972.50
  5. Step 5: Solve for x
    x = 7,367,035,972.50/79,305.60
  6. Step 6: Final answer
    x = 92,894.27

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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.