Home / 80,670.53-121,060.93-28,080.02

Finding the Fourth Proportional to 80,670.53, 121,060.93 and 28,080.02

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Solution

The fourth proportional to 80,670.53, 121,060.93 and 28,080.02 is: 42,139.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,670.53 : 121,060.93 = 28,080.02 : x
  2. Step 2: Convert to fraction form
    80,670.53/121,060.93 = 28,080.02/x
  3. Step 3: Cross multiply
    80,670.53x = 121,060.93 × 28,080.02
  4. Step 4: Simplify right side
    80,670.53x = 3,399,392,939.75
  5. Step 5: Solve for x
    x = 3,399,392,939.75/80,670.53
  6. Step 6: Final answer
    x = 42,139.22

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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.