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Finding the Fourth Proportional to 78,604.80, 108,360 and 59,709.12

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Solution

The fourth proportional to 78,604.80, 108,360 and 59,709.12 is: 82,311.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,604.80 : 108,360 = 59,709.12 : x
  2. Step 2: Convert to fraction form
    78,604.80/108,360 = 59,709.12/x
  3. Step 3: Cross multiply
    78,604.80x = 108,360 × 59,709.12
  4. Step 4: Simplify right side
    78,604.80x = 6,470,080,243.20
  5. Step 5: Solve for x
    x = 6,470,080,243.20/78,604.80
  6. Step 6: Final answer
    x = 82,311.52

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.