Home / 80,743.01-121,116.83-21,578.76

Finding the Fourth Proportional to 80,743.01, 121,116.83 and 21,578.76

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Solution

The fourth proportional to 80,743.01, 121,116.83 and 21,578.76 is: 32,368.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,743.01 : 121,116.83 = 21,578.76 : x
  2. Step 2: Convert to fraction form
    80,743.01/121,116.83 = 21,578.76/x
  3. Step 3: Cross multiply
    80,743.01x = 121,116.83 × 21,578.76
  4. Step 4: Simplify right side
    80,743.01x = 2,613,550,898.64
  5. Step 5: Solve for x
    x = 2,613,550,898.64/80,743.01
  6. Step 6: Final answer
    x = 32,368.76

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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.