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Finding the Fourth Proportional to 48,613.80, 72,936.90 and 43,387.80

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Solution

The fourth proportional to 48,613.80, 72,936.90 and 43,387.80 is: 65,096.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,613.80 : 72,936.90 = 43,387.80 : x
  2. Step 2: Convert to fraction form
    48,613.80/72,936.90 = 43,387.80/x
  3. Step 3: Cross multiply
    48,613.80x = 72,936.90 × 43,387.80
  4. Step 4: Simplify right side
    48,613.80x = 3,164,571,629.82
  5. Step 5: Solve for x
    x = 3,164,571,629.82/48,613.80
  6. Step 6: Final answer
    x = 65,096.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.