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Finding the Fourth Proportional to 72,297.48, 99,772.62 and 40,465.56

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Solution

The fourth proportional to 72,297.48, 99,772.62 and 40,465.56 is: 55,843.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,297.48 : 99,772.62 = 40,465.56 : x
  2. Step 2: Convert to fraction form
    72,297.48/99,772.62 = 40,465.56/x
  3. Step 3: Cross multiply
    72,297.48x = 99,772.62 × 40,465.56
  4. Step 4: Simplify right side
    72,297.48x = 4,037,354,940.97
  5. Step 5: Solve for x
    x = 4,037,354,940.97/72,297.48
  6. Step 6: Final answer
    x = 55,843.65

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1.5x scale

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.