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Finding the Fourth Proportional to 78,846.53, 108,808.67 and 43,035.77

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Solution

The fourth proportional to 78,846.53, 108,808.67 and 43,035.77 is: 59,389.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,846.53 : 108,808.67 = 43,035.77 : x
  2. Step 2: Convert to fraction form
    78,846.53/108,808.67 = 43,035.77/x
  3. Step 3: Cross multiply
    78,846.53x = 108,808.67 × 43,035.77
  4. Step 4: Simplify right side
    78,846.53x = 4,682,664,459.67
  5. Step 5: Solve for x
    x = 4,682,664,459.67/78,846.53
  6. Step 6: Final answer
    x = 59,389.61

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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.