Home / 40,086.84-55,286.28-30,038.88

Finding the Fourth Proportional to 40,086.84, 55,286.28 and 30,038.88

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Solution

The fourth proportional to 40,086.84, 55,286.28 and 30,038.88 is: 41,428.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,086.84 : 55,286.28 = 30,038.88 : x
  2. Step 2: Convert to fraction form
    40,086.84/55,286.28 = 30,038.88/x
  3. Step 3: Cross multiply
    40,086.84x = 55,286.28 × 30,038.88
  4. Step 4: Simplify right side
    40,086.84x = 1,660,737,930.57
  5. Step 5: Solve for x
    x = 1,660,737,930.57/40,086.84
  6. Step 6: Final answer
    x = 41,428.51

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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.