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Finding the Fourth Proportional to 72,857.97, 100,541.30 and 40,591.83

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Solution

The fourth proportional to 72,857.97, 100,541.30 and 40,591.83 is: 56,015.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,857.97 : 100,541.30 = 40,591.83 : x
  2. Step 2: Convert to fraction form
    72,857.97/100,541.30 = 40,591.83/x
  3. Step 3: Cross multiply
    72,857.97x = 100,541.30 × 40,591.83
  4. Step 4: Simplify right side
    72,857.97x = 4,081,155,154.62
  5. Step 5: Solve for x
    x = 4,081,155,154.62/72,857.97
  6. Step 6: Final answer
    x = 56,015.22

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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.