Home / 45,435.72-68,215.04-31,360.76

Finding the Fourth Proportional to 45,435.72, 68,215.04 and 31,360.76

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Solution

The fourth proportional to 45,435.72, 68,215.04 and 31,360.76 is: 47,083.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,435.72 : 68,215.04 = 31,360.76 : x
  2. Step 2: Convert to fraction form
    45,435.72/68,215.04 = 31,360.76/x
  3. Step 3: Cross multiply
    45,435.72x = 68,215.04 × 31,360.76
  4. Step 4: Simplify right side
    45,435.72x = 2,139,275,497.83
  5. Step 5: Solve for x
    x = 2,139,275,497.83/45,435.72
  6. Step 6: Final answer
    x = 47,083.56

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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.