Home / 80,907.15-121,344.33-21,743.34

Finding the Fourth Proportional to 80,907.15, 121,344.33 and 21,743.34

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Solution

The fourth proportional to 80,907.15, 121,344.33 and 21,743.34 is: 32,610.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,907.15 : 121,344.33 = 21,743.34 : x
  2. Step 2: Convert to fraction form
    80,907.15/121,344.33 = 21,743.34/x
  3. Step 3: Cross multiply
    80,907.15x = 121,344.33 × 21,743.34
  4. Step 4: Simplify right side
    80,907.15x = 2,638,430,528.45
  5. Step 5: Solve for x
    x = 2,638,430,528.45/80,907.15
  6. Step 6: Final answer
    x = 32,610.60

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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.