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Finding the Fourth Proportional to 45,661.74, 62,972.40 and 28,667.57

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Solution

The fourth proportional to 45,661.74, 62,972.40 and 28,667.57 is: 39,535.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,661.74 : 62,972.40 = 28,667.57 : x
  2. Step 2: Convert to fraction form
    45,661.74/62,972.40 = 28,667.57/x
  3. Step 3: Cross multiply
    45,661.74x = 62,972.40 × 28,667.57
  4. Step 4: Simplify right side
    45,661.74x = 1,805,265,370.21
  5. Step 5: Solve for x
    x = 1,805,265,370.21/45,661.74
  6. Step 6: Final answer
    x = 39,535.62

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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.