Home / 66,872.64-100,285.07-31,327.91

Finding the Fourth Proportional to 66,872.64, 100,285.07 and 31,327.91

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Solution

The fourth proportional to 66,872.64, 100,285.07 and 31,327.91 is: 46,980.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,872.64 : 100,285.07 = 31,327.91 : x
  2. Step 2: Convert to fraction form
    66,872.64/100,285.07 = 31,327.91/x
  3. Step 3: Cross multiply
    66,872.64x = 100,285.07 × 31,327.91
  4. Step 4: Simplify right side
    66,872.64x = 3,141,720,989.24
  5. Step 5: Solve for x
    x = 3,141,720,989.24/66,872.64
  6. Step 6: Final answer
    x = 46,980.66

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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.