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Finding the Fourth Proportional to 72,475.44, 108,713.22 and 19,885.32

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Solution

The fourth proportional to 72,475.44, 108,713.22 and 19,885.32 is: 29,828.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,475.44 : 108,713.22 = 19,885.32 : x
  2. Step 2: Convert to fraction form
    72,475.44/108,713.22 = 19,885.32/x
  3. Step 3: Cross multiply
    72,475.44x = 108,713.22 × 19,885.32
  4. Step 4: Simplify right side
    72,475.44x = 2,161,797,167.93
  5. Step 5: Solve for x
    x = 2,161,797,167.93/72,475.44
  6. Step 6: Final answer
    x = 29,828.00

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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.