Home / 45,362.02-68,019.60-20,380.72

Finding the Fourth Proportional to 45,362.02, 68,019.60 and 20,380.72

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Solution

The fourth proportional to 45,362.02, 68,019.60 and 20,380.72 is: 30,560.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,362.02 : 68,019.60 = 20,380.72 : x
  2. Step 2: Convert to fraction form
    45,362.02/68,019.60 = 20,380.72/x
  3. Step 3: Cross multiply
    45,362.02x = 68,019.60 × 20,380.72
  4. Step 4: Simplify right side
    45,362.02x = 1,386,288,422.11
  5. Step 5: Solve for x
    x = 1,386,288,422.11/45,362.02
  6. Step 6: Final answer
    x = 30,560.55

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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.