Home / 45,145.20-67,728.60-21,752.40

Finding the Fourth Proportional to 45,145.20, 67,728.60 and 21,752.40

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Solution

The fourth proportional to 45,145.20, 67,728.60 and 21,752.40 is: 32,633.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,145.20 : 67,728.60 = 21,752.40 : x
  2. Step 2: Convert to fraction form
    45,145.20/67,728.60 = 21,752.40/x
  3. Step 3: Cross multiply
    45,145.20x = 67,728.60 × 21,752.40
  4. Step 4: Simplify right side
    45,145.20x = 1,473,259,598.64
  5. Step 5: Solve for x
    x = 1,473,259,598.64/45,145.20
  6. Step 6: Final answer
    x = 32,633.80

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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.