Home / 80,947.24-121,405.02-21,783.40

Finding the Fourth Proportional to 80,947.24, 121,405.02 and 21,783.40

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Solution

The fourth proportional to 80,947.24, 121,405.02 and 21,783.40 is: 32,670.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,947.24 : 121,405.02 = 21,783.40 : x
  2. Step 2: Convert to fraction form
    80,947.24/121,405.02 = 21,783.40/x
  3. Step 3: Cross multiply
    80,947.24x = 121,405.02 × 21,783.40
  4. Step 4: Simplify right side
    80,947.24x = 2,644,614,112.67
  5. Step 5: Solve for x
    x = 2,644,614,112.67/80,947.24
  6. Step 6: Final answer
    x = 32,670.84

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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.