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Finding the Fourth Proportional to 78,809.52, 118,214.30 and 23,405.52

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Solution

The fourth proportional to 78,809.52, 118,214.30 and 23,405.52 is: 35,108.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,809.52 : 118,214.30 = 23,405.52 : x
  2. Step 2: Convert to fraction form
    78,809.52/118,214.30 = 23,405.52/x
  3. Step 3: Cross multiply
    78,809.52x = 118,214.30 × 23,405.52
  4. Step 4: Simplify right side
    78,809.52x = 2,766,867,162.94
  5. Step 5: Solve for x
    x = 2,766,867,162.94/78,809.52
  6. Step 6: Final answer
    x = 35,108.29

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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.