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Finding the Fourth Proportional to 60,200.80, 90,315.78 and 18,080.80

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Solution

The fourth proportional to 60,200.80, 90,315.78 and 18,080.80 is: 27,125.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,200.80 : 90,315.78 = 18,080.80 : x
  2. Step 2: Convert to fraction form
    60,200.80/90,315.78 = 18,080.80/x
  3. Step 3: Cross multiply
    60,200.80x = 90,315.78 × 18,080.80
  4. Step 4: Simplify right side
    60,200.80x = 1,632,981,555.02
  5. Step 5: Solve for x
    x = 1,632,981,555.02/60,200.80
  6. Step 6: Final answer
    x = 27,125.58

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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.