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Finding the Fourth Proportional to 74,584.72, 102,666.96 and 65,007.97

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Solution

The fourth proportional to 74,584.72, 102,666.96 and 65,007.97 is: 89,484.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,584.72 : 102,666.96 = 65,007.97 : x
  2. Step 2: Convert to fraction form
    74,584.72/102,666.96 = 65,007.97/x
  3. Step 3: Cross multiply
    74,584.72x = 102,666.96 × 65,007.97
  4. Step 4: Simplify right side
    74,584.72x = 6,674,169,817.30
  5. Step 5: Solve for x
    x = 6,674,169,817.30/74,584.72
  6. Step 6: Final answer
    x = 89,484.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.