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Finding the Fourth Proportional to 75,254.50, 103,854.45 and 41,720.50

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Solution

The fourth proportional to 75,254.50, 103,854.45 and 41,720.50 is: 57,576.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,254.50 : 103,854.45 = 41,720.50 : x
  2. Step 2: Convert to fraction form
    75,254.50/103,854.45 = 41,720.50/x
  3. Step 3: Cross multiply
    75,254.50x = 103,854.45 × 41,720.50
  4. Step 4: Simplify right side
    75,254.50x = 4,332,859,581.23
  5. Step 5: Solve for x
    x = 4,332,859,581.23/75,254.50
  6. Step 6: Final answer
    x = 57,576.09

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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.