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Finding the Fourth Proportional to 75,300.36, 112,728.63 and 65,958.63

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Solution

The fourth proportional to 75,300.36, 112,728.63 and 65,958.63 is: 98,743.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,300.36 : 112,728.63 = 65,958.63 : x
  2. Step 2: Convert to fraction form
    75,300.36/112,728.63 = 65,958.63/x
  3. Step 3: Cross multiply
    75,300.36x = 112,728.63 × 65,958.63
  4. Step 4: Simplify right side
    75,300.36x = 7,435,425,996.58
  5. Step 5: Solve for x
    x = 7,435,425,996.58/75,300.36
  6. Step 6: Final answer
    x = 98,743.57

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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.