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Finding the Fourth Proportional to 78,806.34, 118,142.97 and 36,664.66

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Solution

The fourth proportional to 78,806.34, 118,142.97 and 36,664.66 is: 54,966.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,806.34 : 118,142.97 = 36,664.66 : x
  2. Step 2: Convert to fraction form
    78,806.34/118,142.97 = 36,664.66/x
  3. Step 3: Cross multiply
    78,806.34x = 118,142.97 × 36,664.66
  4. Step 4: Simplify right side
    78,806.34x = 4,331,671,826.44
  5. Step 5: Solve for x
    x = 4,331,671,826.44/78,806.34
  6. Step 6: Final answer
    x = 54,966.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.