Home / 80,664.16-121,002-21,499.52

Finding the Fourth Proportional to 80,664.16, 121,002 and 21,499.52

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Solution

The fourth proportional to 80,664.16, 121,002 and 21,499.52 is: 32,250.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,664.16 : 121,002 = 21,499.52 : x
  2. Step 2: Convert to fraction form
    80,664.16/121,002 = 21,499.52/x
  3. Step 3: Cross multiply
    80,664.16x = 121,002 × 21,499.52
  4. Step 4: Simplify right side
    80,664.16x = 2,601,484,919.04
  5. Step 5: Solve for x
    x = 2,601,484,919.04/80,664.16
  6. Step 6: Final answer
    x = 32,250.82

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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.