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Finding the Fourth Proportional to 81,133.58, 121,700.37 and 21,969.24

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Solution

The fourth proportional to 81,133.58, 121,700.37 and 21,969.24 is: 32,953.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,133.58 : 121,700.37 = 21,969.24 : x
  2. Step 2: Convert to fraction form
    81,133.58/121,700.37 = 21,969.24/x
  3. Step 3: Cross multiply
    81,133.58x = 121,700.37 × 21,969.24
  4. Step 4: Simplify right side
    81,133.58x = 2,673,664,947.19
  5. Step 5: Solve for x
    x = 2,673,664,947.19/81,133.58
  6. Step 6: Final answer
    x = 32,953.86

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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.