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Finding the Fourth Proportional to 78,847.68, 108,808.20 and 43,037.58

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Solution

The fourth proportional to 78,847.68, 108,808.20 and 43,037.58 is: 59,390.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,847.68 : 108,808.20 = 43,037.58 : x
  2. Step 2: Convert to fraction form
    78,847.68/108,808.20 = 43,037.58/x
  3. Step 3: Cross multiply
    78,847.68x = 108,808.20 × 43,037.58
  4. Step 4: Simplify right side
    78,847.68x = 4,682,841,612.16
  5. Step 5: Solve for x
    x = 4,682,841,612.16/78,847.68
  6. Step 6: Final answer
    x = 59,390.99

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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.