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Finding the Fourth Proportional to 60,288.16, 90,488.24 and 30,728.20

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Solution

The fourth proportional to 60,288.16, 90,488.24 and 30,728.20 is: 46,120.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,288.16 : 90,488.24 = 30,728.20 : x
  2. Step 2: Convert to fraction form
    60,288.16/90,488.24 = 30,728.20/x
  3. Step 3: Cross multiply
    60,288.16x = 90,488.24 × 30,728.20
  4. Step 4: Simplify right side
    60,288.16x = 2,780,540,736.37
  5. Step 5: Solve for x
    x = 2,780,540,736.37/60,288.16
  6. Step 6: Final answer
    x = 46,120.84

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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.