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Finding the Fourth Proportional to 78,381.80, 108,173.56 and 44,396.34

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Solution

The fourth proportional to 78,381.80, 108,173.56 and 44,396.34 is: 61,270.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,381.80 : 108,173.56 = 44,396.34 : x
  2. Step 2: Convert to fraction form
    78,381.80/108,173.56 = 44,396.34/x
  3. Step 3: Cross multiply
    78,381.80x = 108,173.56 × 44,396.34
  4. Step 4: Simplify right side
    78,381.80x = 4,802,510,148.77
  5. Step 5: Solve for x
    x = 4,802,510,148.77/78,381.80
  6. Step 6: Final answer
    x = 61,270.73

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1.5x scale

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.