Home / 78,747.34-118,136.22-25,453.66

Finding the Fourth Proportional to 78,747.34, 118,136.22 and 25,453.66

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Solution

The fourth proportional to 78,747.34, 118,136.22 and 25,453.66 is: 38,185.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,747.34 : 118,136.22 = 25,453.66 : x
  2. Step 2: Convert to fraction form
    78,747.34/118,136.22 = 25,453.66/x
  3. Step 3: Cross multiply
    78,747.34x = 118,136.22 × 25,453.66
  4. Step 4: Simplify right side
    78,747.34x = 3,006,999,177.57
  5. Step 5: Solve for x
    x = 3,006,999,177.57/78,747.34
  6. Step 6: Final answer
    x = 38,185.41

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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.