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Finding the Fourth Proportional to 78,867.34, 108,832.80 and 43,050.43

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Solution

The fourth proportional to 78,867.34, 108,832.80 and 43,050.43 is: 59,407.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,867.34 : 108,832.80 = 43,050.43 : x
  2. Step 2: Convert to fraction form
    78,867.34/108,832.80 = 43,050.43/x
  3. Step 3: Cross multiply
    78,867.34x = 108,832.80 × 43,050.43
  4. Step 4: Simplify right side
    78,867.34x = 4,685,298,838.10
  5. Step 5: Solve for x
    x = 4,685,298,838.10/78,867.34
  6. Step 6: Final answer
    x = 59,407.34

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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.