Home / 72,190.44-99,624.87-40,359.42

Finding the Fourth Proportional to 72,190.44, 99,624.87 and 40,359.42

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Solution

The fourth proportional to 72,190.44, 99,624.87 and 40,359.42 is: 55,697.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,190.44 : 99,624.87 = 40,359.42 : x
  2. Step 2: Convert to fraction form
    72,190.44/99,624.87 = 40,359.42/x
  3. Step 3: Cross multiply
    72,190.44x = 99,624.87 × 40,359.42
  4. Step 4: Simplify right side
    72,190.44x = 4,020,801,970.78
  5. Step 5: Solve for x
    x = 4,020,801,970.78/72,190.44
  6. Step 6: Final answer
    x = 55,697.15

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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.