Home / 80,865.02-121,232.73-54,238.70

Finding the Fourth Proportional to 80,865.02, 121,232.73 and 54,238.70

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Solution

The fourth proportional to 80,865.02, 121,232.73 and 54,238.70 is: 81,314.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,865.02 : 121,232.73 = 54,238.70 : x
  2. Step 2: Convert to fraction form
    80,865.02/121,232.73 = 54,238.70/x
  3. Step 3: Cross multiply
    80,865.02x = 121,232.73 × 54,238.70
  4. Step 4: Simplify right side
    80,865.02x = 6,575,505,672.65
  5. Step 5: Solve for x
    x = 6,575,505,672.65/80,865.02
  6. Step 6: Final answer
    x = 81,314.59

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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.