Home / 91,039.88-136,559.82-28,715.24

Finding the Fourth Proportional to 91,039.88, 136,559.82 and 28,715.24

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Solution

The fourth proportional to 91,039.88, 136,559.82 and 28,715.24 is: 43,072.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,039.88 : 136,559.82 = 28,715.24 : x
  2. Step 2: Convert to fraction form
    91,039.88/136,559.82 = 28,715.24/x
  3. Step 3: Cross multiply
    91,039.88x = 136,559.82 × 28,715.24
  4. Step 4: Simplify right side
    91,039.88x = 3,921,348,005.66
  5. Step 5: Solve for x
    x = 3,921,348,005.66/91,039.88
  6. Step 6: Final answer
    x = 43,072.86

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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.