Home / 40,868.32-56,400.70-30,778.96

Finding the Fourth Proportional to 40,868.32, 56,400.70 and 30,778.96

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Solution

The fourth proportional to 40,868.32, 56,400.70 and 30,778.96 is: 42,476.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,868.32 : 56,400.70 = 30,778.96 : x
  2. Step 2: Convert to fraction form
    40,868.32/56,400.70 = 30,778.96/x
  3. Step 3: Cross multiply
    40,868.32x = 56,400.70 × 30,778.96
  4. Step 4: Simplify right side
    40,868.32x = 1,735,954,889.27
  5. Step 5: Solve for x
    x = 1,735,954,889.27/40,868.32
  6. Step 6: Final answer
    x = 42,476.79

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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.