Home / 78,984.08-118,496.89-28,388.22

Finding the Fourth Proportional to 78,984.08, 118,496.89 and 28,388.22

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Solution

The fourth proportional to 78,984.08, 118,496.89 and 28,388.22 is: 42,589.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,984.08 : 118,496.89 = 28,388.22 : x
  2. Step 2: Convert to fraction form
    78,984.08/118,496.89 = 28,388.22/x
  3. Step 3: Cross multiply
    78,984.08x = 118,496.89 × 28,388.22
  4. Step 4: Simplify right side
    78,984.08x = 3,363,915,782.64
  5. Step 5: Solve for x
    x = 3,363,915,782.64/78,984.08
  6. Step 6: Final answer
    x = 42,589.80

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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.