Home / 72,010.74-99,379.62-40,180.32

Finding the Fourth Proportional to 72,010.74, 99,379.62 and 40,180.32

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Solution

The fourth proportional to 72,010.74, 99,379.62 and 40,180.32 is: 55,451.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,010.74 : 99,379.62 = 40,180.32 : x
  2. Step 2: Convert to fraction form
    72,010.74/99,379.62 = 40,180.32/x
  3. Step 3: Cross multiply
    72,010.74x = 99,379.62 × 40,180.32
  4. Step 4: Simplify right side
    72,010.74x = 3,993,104,933.08
  5. Step 5: Solve for x
    x = 3,993,104,933.08/72,010.74
  6. Step 6: Final answer
    x = 55,451.52

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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.