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Finding the Fourth Proportional to 109,662.40, 164,380.20 and 59,636.80

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Solution

The fourth proportional to 109,662.40, 164,380.20 and 59,636.80 is: 89,393.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,662.40 : 164,380.20 = 59,636.80 : x
  2. Step 2: Convert to fraction form
    109,662.40/164,380.20 = 59,636.80/x
  3. Step 3: Cross multiply
    109,662.40x = 164,380.20 × 59,636.80
  4. Step 4: Simplify right side
    109,662.40x = 9,803,109,111.36
  5. Step 5: Solve for x
    x = 9,803,109,111.36/109,662.40
  6. Step 6: Final answer
    x = 89,393.53

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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.