Home / 78,815.76-118,136.16-32,043.12

Finding the Fourth Proportional to 78,815.76, 118,136.16 and 32,043.12

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Solution

The fourth proportional to 78,815.76, 118,136.16 and 32,043.12 is: 48,029.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,815.76 : 118,136.16 = 32,043.12 : x
  2. Step 2: Convert to fraction form
    78,815.76/118,136.16 = 32,043.12/x
  3. Step 3: Cross multiply
    78,815.76x = 118,136.16 × 32,043.12
  4. Step 4: Simplify right side
    78,815.76x = 3,785,451,151.22
  5. Step 5: Solve for x
    x = 3,785,451,151.22/78,815.76
  6. Step 6: Final answer
    x = 48,029.11

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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.