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Finding the Fourth Proportional to 49,603, 68,432.64 and 28,370.92

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Solution

The fourth proportional to 49,603, 68,432.64 and 28,370.92 is: 39,140.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,603 : 68,432.64 = 28,370.92 : x
  2. Step 2: Convert to fraction form
    49,603/68,432.64 = 28,370.92/x
  3. Step 3: Cross multiply
    49,603x = 68,432.64 × 28,370.92
  4. Step 4: Simplify right side
    49,603x = 1,941,496,954.83
  5. Step 5: Solve for x
    x = 1,941,496,954.83/49,603
  6. Step 6: Final answer
    x = 39,140.72

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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.