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Finding the Fourth Proportional to 73,318.80, 101,180.16 and 39,784.80

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Solution

The fourth proportional to 73,318.80, 101,180.16 and 39,784.80 is: 54,903.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,318.80 : 101,180.16 = 39,784.80 : x
  2. Step 2: Convert to fraction form
    73,318.80/101,180.16 = 39,784.80/x
  3. Step 3: Cross multiply
    73,318.80x = 101,180.16 × 39,784.80
  4. Step 4: Simplify right side
    73,318.80x = 4,025,432,429.57
  5. Step 5: Solve for x
    x = 4,025,432,429.57/73,318.80
  6. Step 6: Final answer
    x = 54,903.14

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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.