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Finding the Fourth Proportional to 72,704.64, 100,333.44 and 42,896.64

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Solution

The fourth proportional to 72,704.64, 100,333.44 and 42,896.64 is: 59,197.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,704.64 : 100,333.44 = 42,896.64 : x
  2. Step 2: Convert to fraction form
    72,704.64/100,333.44 = 42,896.64/x
  3. Step 3: Cross multiply
    72,704.64x = 100,333.44 × 42,896.64
  4. Step 4: Simplify right side
    72,704.64x = 4,303,967,455.64
  5. Step 5: Solve for x
    x = 4,303,967,455.64/72,704.64
  6. Step 6: Final answer
    x = 59,197.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.