Home / 80,254.67-120,382.61-21,090.24

Finding the Fourth Proportional to 80,254.67, 120,382.61 and 21,090.24

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Solution

The fourth proportional to 80,254.67, 120,382.61 and 21,090.24 is: 31,635.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,254.67 : 120,382.61 = 21,090.24 : x
  2. Step 2: Convert to fraction form
    80,254.67/120,382.61 = 21,090.24/x
  3. Step 3: Cross multiply
    80,254.67x = 120,382.61 × 21,090.24
  4. Step 4: Simplify right side
    80,254.67x = 2,538,898,031.28
  5. Step 5: Solve for x
    x = 2,538,898,031.28/80,254.67
  6. Step 6: Final answer
    x = 31,635.52

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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.