Home / 80,803.23-121,691.06-71,559.51

Finding the Fourth Proportional to 80,803.23, 121,691.06 and 71,559.51

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Solution

The fourth proportional to 80,803.23, 121,691.06 and 71,559.51 is: 107,769.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,803.23 : 121,691.06 = 71,559.51 : x
  2. Step 2: Convert to fraction form
    80,803.23/121,691.06 = 71,559.51/x
  3. Step 3: Cross multiply
    80,803.23x = 121,691.06 × 71,559.51
  4. Step 4: Simplify right side
    80,803.23x = 8,708,152,803.88
  5. Step 5: Solve for x
    x = 8,708,152,803.88/80,803.23
  6. Step 6: Final answer
    x = 107,769.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.