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Finding the Fourth Proportional to 60,260.64, 90,361.80 and 20,803.92

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Solution

The fourth proportional to 60,260.64, 90,361.80 and 20,803.92 is: 31,195.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,260.64 : 90,361.80 = 20,803.92 : x
  2. Step 2: Convert to fraction form
    60,260.64/90,361.80 = 20,803.92/x
  3. Step 3: Cross multiply
    60,260.64x = 90,361.80 × 20,803.92
  4. Step 4: Simplify right side
    60,260.64x = 1,879,879,658.26
  5. Step 5: Solve for x
    x = 1,879,879,658.26/60,260.64
  6. Step 6: Final answer
    x = 31,195.81

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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.