Home / 80,941.02-121,337.56-28,321.80

Finding the Fourth Proportional to 80,941.02, 121,337.56 and 28,321.80

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Solution

The fourth proportional to 80,941.02, 121,337.56 and 28,321.80 is: 42,456.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,941.02 : 121,337.56 = 28,321.80 : x
  2. Step 2: Convert to fraction form
    80,941.02/121,337.56 = 28,321.80/x
  3. Step 3: Cross multiply
    80,941.02x = 121,337.56 × 28,321.80
  4. Step 4: Simplify right side
    80,941.02x = 3,436,498,106.81
  5. Step 5: Solve for x
    x = 3,436,498,106.81/80,941.02
  6. Step 6: Final answer
    x = 42,456.82

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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.