Home / 80,953.32-121,420.52-21,784.34

Finding the Fourth Proportional to 80,953.32, 121,420.52 and 21,784.34

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Solution

The fourth proportional to 80,953.32, 121,420.52 and 21,784.34 is: 32,673.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,953.32 : 121,420.52 = 21,784.34 : x
  2. Step 2: Convert to fraction form
    80,953.32/121,420.52 = 21,784.34/x
  3. Step 3: Cross multiply
    80,953.32x = 121,420.52 × 21,784.34
  4. Step 4: Simplify right side
    80,953.32x = 2,645,066,166.98
  5. Step 5: Solve for x
    x = 2,645,066,166.98/80,953.32
  6. Step 6: Final answer
    x = 32,673.97

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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.