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Finding the Fourth Proportional to 75,086.48, 112,899.76 and 69,234.89

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Solution

The fourth proportional to 75,086.48, 112,899.76 and 69,234.89 is: 104,101.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,086.48 : 112,899.76 = 69,234.89 : x
  2. Step 2: Convert to fraction form
    75,086.48/112,899.76 = 69,234.89/x
  3. Step 3: Cross multiply
    75,086.48x = 112,899.76 × 69,234.89
  4. Step 4: Simplify right side
    75,086.48x = 7,816,602,464.63
  5. Step 5: Solve for x
    x = 7,816,602,464.63/75,086.48
  6. Step 6: Final answer
    x = 104,101.33

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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.