Home / 80,784.04-121,174.32-21,619.70

Finding the Fourth Proportional to 80,784.04, 121,174.32 and 21,619.70

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Solution

The fourth proportional to 80,784.04, 121,174.32 and 21,619.70 is: 32,429.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,784.04 : 121,174.32 = 21,619.70 : x
  2. Step 2: Convert to fraction form
    80,784.04/121,174.32 = 21,619.70/x
  3. Step 3: Cross multiply
    80,784.04x = 121,174.32 × 21,619.70
  4. Step 4: Simplify right side
    80,784.04x = 2,619,752,446.10
  5. Step 5: Solve for x
    x = 2,619,752,446.10/80,784.04
  6. Step 6: Final answer
    x = 32,429.08

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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.