Home / 40,776.75-56,243.48-39,405.12

Finding the Fourth Proportional to 40,776.75, 56,243.48 and 39,405.12

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Solution

The fourth proportional to 40,776.75, 56,243.48 and 39,405.12 is: 54,351.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,776.75 : 56,243.48 = 39,405.12 : x
  2. Step 2: Convert to fraction form
    40,776.75/56,243.48 = 39,405.12/x
  3. Step 3: Cross multiply
    40,776.75x = 56,243.48 × 39,405.12
  4. Step 4: Simplify right side
    40,776.75x = 2,216,281,078.62
  5. Step 5: Solve for x
    x = 2,216,281,078.62/40,776.75
  6. Step 6: Final answer
    x = 54,351.59

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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.