Home / 40,521.12-55,942.56-30,885.36

Finding the Fourth Proportional to 40,521.12, 55,942.56 and 30,885.36

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Solution

The fourth proportional to 40,521.12, 55,942.56 and 30,885.36 is: 42,639.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,521.12 : 55,942.56 = 30,885.36 : x
  2. Step 2: Convert to fraction form
    40,521.12/55,942.56 = 30,885.36/x
  3. Step 3: Cross multiply
    40,521.12x = 55,942.56 × 30,885.36
  4. Step 4: Simplify right side
    40,521.12x = 1,727,806,104.92
  5. Step 5: Solve for x
    x = 1,727,806,104.92/40,521.12
  6. Step 6: Final answer
    x = 42,639.64

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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.