Home / 54,086.32-81,129.12-14,643.28

Finding the Fourth Proportional to 54,086.32, 81,129.12 and 14,643.28

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Solution

The fourth proportional to 54,086.32, 81,129.12 and 14,643.28 is: 21,964.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,086.32 : 81,129.12 = 14,643.28 : x
  2. Step 2: Convert to fraction form
    54,086.32/81,129.12 = 14,643.28/x
  3. Step 3: Cross multiply
    54,086.32x = 81,129.12 × 14,643.28
  4. Step 4: Simplify right side
    54,086.32x = 1,187,996,420.31
  5. Step 5: Solve for x
    x = 1,187,996,420.31/54,086.32
  6. Step 6: Final answer
    x = 21,964.82

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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.