Home / 80,725.02-121,087.53-21,557.56

Finding the Fourth Proportional to 80,725.02, 121,087.53 and 21,557.56

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Solution

The fourth proportional to 80,725.02, 121,087.53 and 21,557.56 is: 32,336.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,725.02 : 121,087.53 = 21,557.56 : x
  2. Step 2: Convert to fraction form
    80,725.02/121,087.53 = 21,557.56/x
  3. Step 3: Cross multiply
    80,725.02x = 121,087.53 × 21,557.56
  4. Step 4: Simplify right side
    80,725.02x = 2,610,351,693.23
  5. Step 5: Solve for x
    x = 2,610,351,693.23/80,725.02
  6. Step 6: Final answer
    x = 32,336.34

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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.