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Finding the Fourth Proportional to 72,509.01, 100,057.32 and 40,245.27

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Solution

The fourth proportional to 72,509.01, 100,057.32 and 40,245.27 is: 55,535.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,509.01 : 100,057.32 = 40,245.27 : x
  2. Step 2: Convert to fraction form
    72,509.01/100,057.32 = 40,245.27/x
  3. Step 3: Cross multiply
    72,509.01x = 100,057.32 × 40,245.27
  4. Step 4: Simplify right side
    72,509.01x = 4,026,833,858.88
  5. Step 5: Solve for x
    x = 4,026,833,858.88/72,509.01
  6. Step 6: Final answer
    x = 55,535.63

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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.