Home / 80,947.01-121,420.74-28,344.20

Finding the Fourth Proportional to 80,947.01, 121,420.74 and 28,344.20

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Solution

The fourth proportional to 80,947.01, 121,420.74 and 28,344.20 is: 42,516.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,947.01 : 121,420.74 = 28,344.20 : x
  2. Step 2: Convert to fraction form
    80,947.01/121,420.74 = 28,344.20/x
  3. Step 3: Cross multiply
    80,947.01x = 121,420.74 × 28,344.20
  4. Step 4: Simplify right side
    80,947.01x = 3,441,573,131.60
  5. Step 5: Solve for x
    x = 3,441,573,131.60/80,947.01
  6. Step 6: Final answer
    x = 42,516.37

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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.