Home / 39,870.56-55,019.25-22,871.30

Finding the Fourth Proportional to 39,870.56, 55,019.25 and 22,871.30

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Solution

The fourth proportional to 39,870.56, 55,019.25 and 22,871.30 is: 31,561.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,870.56 : 55,019.25 = 22,871.30 : x
  2. Step 2: Convert to fraction form
    39,870.56/55,019.25 = 22,871.30/x
  3. Step 3: Cross multiply
    39,870.56x = 55,019.25 × 22,871.30
  4. Step 4: Simplify right side
    39,870.56x = 1,258,361,497.43
  5. Step 5: Solve for x
    x = 1,258,361,497.43/39,870.56
  6. Step 6: Final answer
    x = 31,561.17

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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.