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Finding the Fourth Proportional to 79,214.40, 109,225.44 and 63,288

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Solution

The fourth proportional to 79,214.40, 109,225.44 and 63,288 is: 87,265.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,214.40 : 109,225.44 = 63,288 : x
  2. Step 2: Convert to fraction form
    79,214.40/109,225.44 = 63,288/x
  3. Step 3: Cross multiply
    79,214.40x = 109,225.44 × 63,288
  4. Step 4: Simplify right side
    79,214.40x = 6,912,659,646.72
  5. Step 5: Solve for x
    x = 6,912,659,646.72/79,214.40
  6. Step 6: Final answer
    x = 87,265.19

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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.