Home / 80,713.02-121,089.78-28,122.96

Finding the Fourth Proportional to 80,713.02, 121,089.78 and 28,122.96

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Solution

The fourth proportional to 80,713.02, 121,089.78 and 28,122.96 is: 42,191.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,713.02 : 121,089.78 = 28,122.96 : x
  2. Step 2: Convert to fraction form
    80,713.02/121,089.78 = 28,122.96/x
  3. Step 3: Cross multiply
    80,713.02x = 121,089.78 × 28,122.96
  4. Step 4: Simplify right side
    80,713.02x = 3,405,403,039.35
  5. Step 5: Solve for x
    x = 3,405,403,039.35/80,713.02
  6. Step 6: Final answer
    x = 42,191.50

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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.