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Finding the Fourth Proportional to 104,791.79, 144,612.68 and 57,045.49

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Solution

The fourth proportional to 104,791.79, 144,612.68 and 57,045.49 is: 78,722.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,791.79 : 144,612.68 = 57,045.49 : x
  2. Step 2: Convert to fraction form
    104,791.79/144,612.68 = 57,045.49/x
  3. Step 3: Cross multiply
    104,791.79x = 144,612.68 × 57,045.49
  4. Step 4: Simplify right side
    104,791.79x = 8,249,500,544.05
  5. Step 5: Solve for x
    x = 8,249,500,544.05/104,791.79
  6. Step 6: Final answer
    x = 78,722.77

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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.