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Finding the Fourth Proportional to 60,120.92, 90,180.46 and 20,678.37

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Solution

The fourth proportional to 60,120.92, 90,180.46 and 20,678.37 is: 31,017.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,120.92 : 90,180.46 = 20,678.37 : x
  2. Step 2: Convert to fraction form
    60,120.92/90,180.46 = 20,678.37/x
  3. Step 3: Cross multiply
    60,120.92x = 90,180.46 × 20,678.37
  4. Step 4: Simplify right side
    60,120.92x = 1,864,784,866.95
  5. Step 5: Solve for x
    x = 1,864,784,866.95/60,120.92
  6. Step 6: Final answer
    x = 31,017.24

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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.