Home / 72,027.20-99,387.58-40,189.92

Finding the Fourth Proportional to 72,027.20, 99,387.58 and 40,189.92

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Solution

The fourth proportional to 72,027.20, 99,387.58 and 40,189.92 is: 55,456.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,027.20 : 99,387.58 = 40,189.92 : x
  2. Step 2: Convert to fraction form
    72,027.20/99,387.58 = 40,189.92/x
  3. Step 3: Cross multiply
    72,027.20x = 99,387.58 × 40,189.92
  4. Step 4: Simplify right side
    72,027.20x = 3,994,378,889.19
  5. Step 5: Solve for x
    x = 3,994,378,889.19/72,027.20
  6. Step 6: Final answer
    x = 55,456.53

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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.