Home / 54,156.16-81,225.84-20,891.80

Finding the Fourth Proportional to 54,156.16, 81,225.84 and 20,891.80

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Solution

The fourth proportional to 54,156.16, 81,225.84 and 20,891.80 is: 31,334.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,156.16 : 81,225.84 = 20,891.80 : x
  2. Step 2: Convert to fraction form
    54,156.16/81,225.84 = 20,891.80/x
  3. Step 3: Cross multiply
    54,156.16x = 81,225.84 × 20,891.80
  4. Step 4: Simplify right side
    54,156.16x = 1,696,954,004.11
  5. Step 5: Solve for x
    x = 1,696,954,004.11/54,156.16
  6. Step 6: Final answer
    x = 31,334.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.