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Finding the Fourth Proportional to 78,274.87, 108,017.80 and 44,282.01

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Solution

The fourth proportional to 78,274.87, 108,017.80 and 44,282.01 is: 61,108.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,274.87 : 108,017.80 = 44,282.01 : x
  2. Step 2: Convert to fraction form
    78,274.87/108,017.80 = 44,282.01/x
  3. Step 3: Cross multiply
    78,274.87x = 108,017.80 × 44,282.01
  4. Step 4: Simplify right side
    78,274.87x = 4,783,245,299.78
  5. Step 5: Solve for x
    x = 4,783,245,299.78/78,274.87
  6. Step 6: Final answer
    x = 61,108.31

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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.