Home / 80,954.20-121,431.30-45,962.20

Finding the Fourth Proportional to 80,954.20, 121,431.30 and 45,962.20

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Solution

The fourth proportional to 80,954.20, 121,431.30 and 45,962.20 is: 68,943.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,954.20 : 121,431.30 = 45,962.20 : x
  2. Step 2: Convert to fraction form
    80,954.20/121,431.30 = 45,962.20/x
  3. Step 3: Cross multiply
    80,954.20x = 121,431.30 × 45,962.20
  4. Step 4: Simplify right side
    80,954.20x = 5,581,249,696.86
  5. Step 5: Solve for x
    x = 5,581,249,696.86/80,954.20
  6. Step 6: Final answer
    x = 68,943.30

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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.