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Finding the Fourth Proportional to 49,696.80, 68,581.62 and 28,488.40

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Solution

The fourth proportional to 49,696.80, 68,581.62 and 28,488.40 is: 39,314.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,696.80 : 68,581.62 = 28,488.40 : x
  2. Step 2: Convert to fraction form
    49,696.80/68,581.62 = 28,488.40/x
  3. Step 3: Cross multiply
    49,696.80x = 68,581.62 × 28,488.40
  4. Step 4: Simplify right side
    49,696.80x = 1,953,780,623.21
  5. Step 5: Solve for x
    x = 1,953,780,623.21/49,696.80
  6. Step 6: Final answer
    x = 39,314.01

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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.