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Finding the Fourth Proportional to 128,538.64, 192,805.90 and 35,044.39

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Solution

The fourth proportional to 128,538.64, 192,805.90 and 35,044.39 is: 52,566.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,538.64 : 192,805.90 = 35,044.39 : x
  2. Step 2: Convert to fraction form
    128,538.64/192,805.90 = 35,044.39/x
  3. Step 3: Cross multiply
    128,538.64x = 192,805.90 × 35,044.39
  4. Step 4: Simplify right side
    128,538.64x = 6,756,765,307.30
  5. Step 5: Solve for x
    x = 6,756,765,307.30/128,538.64
  6. Step 6: Final answer
    x = 52,566.02

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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.