Home / 80,783.04-121,165.90-28,193.52

Finding the Fourth Proportional to 80,783.04, 121,165.90 and 28,193.52

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Solution

The fourth proportional to 80,783.04, 121,165.90 and 28,193.52 is: 42,287.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,783.04 : 121,165.90 = 28,193.52 : x
  2. Step 2: Convert to fraction form
    80,783.04/121,165.90 = 28,193.52/x
  3. Step 3: Cross multiply
    80,783.04x = 121,165.90 × 28,193.52
  4. Step 4: Simplify right side
    80,783.04x = 3,416,093,224.97
  5. Step 5: Solve for x
    x = 3,416,093,224.97/80,783.04
  6. Step 6: Final answer
    x = 42,287.26

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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.