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Finding the Fourth Proportional to 78,850.96, 108,816.96 and 43,043.08

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Solution

The fourth proportional to 78,850.96, 108,816.96 and 43,043.08 is: 59,400.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,850.96 : 108,816.96 = 43,043.08 : x
  2. Step 2: Convert to fraction form
    78,850.96/108,816.96 = 43,043.08/x
  3. Step 3: Cross multiply
    78,850.96x = 108,816.96 × 43,043.08
  4. Step 4: Simplify right side
    78,850.96x = 4,683,817,114.64
  5. Step 5: Solve for x
    x = 4,683,817,114.64/78,850.96
  6. Step 6: Final answer
    x = 59,400.89

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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.