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Finding the Fourth Proportional to 78,157.66, 107,857.13 and 44,177.15

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Solution

The fourth proportional to 78,157.66, 107,857.13 and 44,177.15 is: 60,964.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,157.66 : 107,857.13 = 44,177.15 : x
  2. Step 2: Convert to fraction form
    78,157.66/107,857.13 = 44,177.15/x
  3. Step 3: Cross multiply
    78,157.66x = 107,857.13 × 44,177.15
  4. Step 4: Simplify right side
    78,157.66x = 4,764,820,610.58
  5. Step 5: Solve for x
    x = 4,764,820,610.58/78,157.66
  6. Step 6: Final answer
    x = 60,964.22

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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.