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Finding the Fourth Proportional to 78,859.01, 108,864.47 and 48,660.98

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Solution

The fourth proportional to 78,859.01, 108,864.47 and 48,660.98 is: 67,176.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,859.01 : 108,864.47 = 48,660.98 : x
  2. Step 2: Convert to fraction form
    78,859.01/108,864.47 = 48,660.98/x
  3. Step 3: Cross multiply
    78,859.01x = 108,864.47 × 48,660.98
  4. Step 4: Simplify right side
    78,859.01x = 5,297,451,797.38
  5. Step 5: Solve for x
    x = 5,297,451,797.38/78,859.01
  6. Step 6: Final answer
    x = 67,176.24

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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.