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Finding the Fourth Proportional to 73,037.78, 109,568.80 and 25,640.58

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Solution

The fourth proportional to 73,037.78, 109,568.80 and 25,640.58 is: 38,465.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,037.78 : 109,568.80 = 25,640.58 : x
  2. Step 2: Convert to fraction form
    73,037.78/109,568.80 = 25,640.58/x
  3. Step 3: Cross multiply
    73,037.78x = 109,568.80 × 25,640.58
  4. Step 4: Simplify right side
    73,037.78x = 2,809,407,581.90
  5. Step 5: Solve for x
    x = 2,809,407,581.90/73,037.78
  6. Step 6: Final answer
    x = 38,465.13

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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.