Home / 81,044.70-121,567.08-21,880.32

Finding the Fourth Proportional to 81,044.70, 121,567.08 and 21,880.32

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Solution

The fourth proportional to 81,044.70, 121,567.08 and 21,880.32 is: 32,820.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,044.70 : 121,567.08 = 21,880.32 : x
  2. Step 2: Convert to fraction form
    81,044.70/121,567.08 = 21,880.32/x
  3. Step 3: Cross multiply
    81,044.70x = 121,567.08 × 21,880.32
  4. Step 4: Simplify right side
    81,044.70x = 2,659,926,611.87
  5. Step 5: Solve for x
    x = 2,659,926,611.87/81,044.70
  6. Step 6: Final answer
    x = 32,820.49

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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.