Home / 78,747.93-118,113.26-28,136.16

Finding the Fourth Proportional to 78,747.93, 118,113.26 and 28,136.16

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Solution

The fourth proportional to 78,747.93, 118,113.26 and 28,136.16 is: 42,201.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,747.93 : 118,113.26 = 28,136.16 : x
  2. Step 2: Convert to fraction form
    78,747.93/118,113.26 = 28,136.16/x
  3. Step 3: Cross multiply
    78,747.93x = 118,113.26 × 28,136.16
  4. Step 4: Simplify right side
    78,747.93x = 3,323,253,440.80
  5. Step 5: Solve for x
    x = 3,323,253,440.80/78,747.93
  6. Step 6: Final answer
    x = 42,201.15

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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.