Home / 54,412.09-81,530.65-45,664.09

Finding the Fourth Proportional to 54,412.09, 81,530.65 and 45,664.09

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Solution

The fourth proportional to 54,412.09, 81,530.65 and 45,664.09 is: 68,422.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,412.09 : 81,530.65 = 45,664.09 : x
  2. Step 2: Convert to fraction form
    54,412.09/81,530.65 = 45,664.09/x
  3. Step 3: Cross multiply
    54,412.09x = 81,530.65 × 45,664.09
  4. Step 4: Simplify right side
    54,412.09x = 3,723,022,792.61
  5. Step 5: Solve for x
    x = 3,723,022,792.61/54,412.09
  6. Step 6: Final answer
    x = 68,422.72

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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.