Home / 80,665.16-121,003.50-21,500.52

Finding the Fourth Proportional to 80,665.16, 121,003.50 and 21,500.52

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Solution

The fourth proportional to 80,665.16, 121,003.50 and 21,500.52 is: 32,252.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,665.16 : 121,003.50 = 21,500.52 : x
  2. Step 2: Convert to fraction form
    80,665.16/121,003.50 = 21,500.52/x
  3. Step 3: Cross multiply
    80,665.16x = 121,003.50 × 21,500.52
  4. Step 4: Simplify right side
    80,665.16x = 2,601,638,171.82
  5. Step 5: Solve for x
    x = 2,601,638,171.82/80,665.16
  6. Step 6: Final answer
    x = 32,252.32

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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.