Home / 40,778.96-56,277.24-30,689.28

Finding the Fourth Proportional to 40,778.96, 56,277.24 and 30,689.28

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Solution

The fourth proportional to 40,778.96, 56,277.24 and 30,689.28 is: 42,352.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,778.96 : 56,277.24 = 30,689.28 : x
  2. Step 2: Convert to fraction form
    40,778.96/56,277.24 = 30,689.28/x
  3. Step 3: Cross multiply
    40,778.96x = 56,277.24 × 30,689.28
  4. Step 4: Simplify right side
    40,778.96x = 1,727,107,975.99
  5. Step 5: Solve for x
    x = 1,727,107,975.99/40,778.96
  6. Step 6: Final answer
    x = 42,352.92

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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.