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Finding the Fourth Proportional to 57,755.92, 79,707.80 and 45,916.96

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Solution

The fourth proportional to 57,755.92, 79,707.80 and 45,916.96 is: 63,369.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,755.92 : 79,707.80 = 45,916.96 : x
  2. Step 2: Convert to fraction form
    57,755.92/79,707.80 = 45,916.96/x
  3. Step 3: Cross multiply
    57,755.92x = 79,707.80 × 45,916.96
  4. Step 4: Simplify right side
    57,755.92x = 3,659,939,864.29
  5. Step 5: Solve for x
    x = 3,659,939,864.29/57,755.92
  6. Step 6: Final answer
    x = 63,369.09

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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.