Home / 72,190.06-99,624.47-40,360.30

Finding the Fourth Proportional to 72,190.06, 99,624.47 and 40,360.30

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Solution

The fourth proportional to 72,190.06, 99,624.47 and 40,360.30 is: 55,698.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,190.06 : 99,624.47 = 40,360.30 : x
  2. Step 2: Convert to fraction form
    72,190.06/99,624.47 = 40,360.30/x
  3. Step 3: Cross multiply
    72,190.06x = 99,624.47 × 40,360.30
  4. Step 4: Simplify right side
    72,190.06x = 4,020,873,496.54
  5. Step 5: Solve for x
    x = 4,020,873,496.54/72,190.06
  6. Step 6: Final answer
    x = 55,698.44

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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.