Home / 78,813.60-118,231.20-26,217.60

Finding the Fourth Proportional to 78,813.60, 118,231.20 and 26,217.60

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Solution

The fourth proportional to 78,813.60, 118,231.20 and 26,217.60 is: 39,329.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,813.60 : 118,231.20 = 26,217.60 : x
  2. Step 2: Convert to fraction form
    78,813.60/118,231.20 = 26,217.60/x
  3. Step 3: Cross multiply
    78,813.60x = 118,231.20 × 26,217.60
  4. Step 4: Simplify right side
    78,813.60x = 3,099,738,309.12
  5. Step 5: Solve for x
    x = 3,099,738,309.12/78,813.60
  6. Step 6: Final answer
    x = 39,329.99

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1.5x scale

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.