Home / 54,215.34-81,371.60-45,385.93

Finding the Fourth Proportional to 54,215.34, 81,371.60 and 45,385.93

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Solution

The fourth proportional to 54,215.34, 81,371.60 and 45,385.93 is: 68,119.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,215.34 : 81,371.60 = 45,385.93 : x
  2. Step 2: Convert to fraction form
    54,215.34/81,371.60 = 45,385.93/x
  3. Step 3: Cross multiply
    54,215.34x = 81,371.60 × 45,385.93
  4. Step 4: Simplify right side
    54,215.34x = 3,693,125,741.59
  5. Step 5: Solve for x
    x = 3,693,125,741.59/54,215.34
  6. Step 6: Final answer
    x = 68,119.57

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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.